The Tor Browser: layout/tools/reftest/reftest.js@925c144e1f1f (annotated)

layout/tools/reftest/reftest.js@925c144e1f1f (annotated)

layout/tools/reftest/reftest.js

Fri, 16 Jan 2015 18:13:44 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Fri, 16 Jan 2015 18:13:44 +0100
branch: TOR_BUG_9701
changeset 14: 925c144e1f1f
permissions: -rw-r--r--

Integrate suggestion from review to improve consistency with existing code.

 /* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- /
 /* vim: set shiftwidth=4 tabstop=8 autoindent cindent expandtab: */
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 #if BOOTSTRAP
 this.EXPORTED_SYMBOLS = ["OnRefTestLoad"];
 #endif
 const CC = Components.classes;
 const CI = Components.interfaces;
 const CR = Components.results;
 const XHTML_NS = "http://www.w3.org/1999/xhtml";
 const XUL_NS = "http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul";
 const NS_LOCAL_FILE_CONTRACTID = "@mozilla.org/file/local;1";
 const NS_GFXINFO_CONTRACTID = "@mozilla.org/gfx/info;1";
 const IO_SERVICE_CONTRACTID = "@mozilla.org/network/io-service;1";
 const DEBUG_CONTRACTID = "@mozilla.org/xpcom/debug;1";
 const NS_LOCALFILEINPUTSTREAM_CONTRACTID =
           "@mozilla.org/network/file-input-stream;1";
 const NS_SCRIPTSECURITYMANAGER_CONTRACTID =
           "@mozilla.org/scriptsecuritymanager;1";
 const NS_REFTESTHELPER_CONTRACTID =
           "@mozilla.org/reftest-helper;1";
 const NS_NETWORK_PROTOCOL_CONTRACTID_PREFIX =
           "@mozilla.org/network/protocol;1?name=";
 const NS_XREAPPINFO_CONTRACTID =
           "@mozilla.org/xre/app-info;1";
 const NS_DIRECTORY_SERVICE_CONTRACTID =
           "@mozilla.org/file/directory_service;1";
 const NS_OBSERVER_SERVICE_CONTRACTID =
           "@mozilla.org/observer-service;1";
 Components.utils.import("resource://gre/modules/FileUtils.jsm");
 var gLoadTimeout = 0;
 var gTimeoutHook = null;
 var gRemote = false;
 var gIgnoreWindowSize = false;
 var gShuffle = false;
 var gTotalChunks = 0;
 var gThisChunk = 0;
 var gContainingWindow = null;
 var gURLFilterRegex = null;
 const FOCUS_FILTER_ALL_TESTS = "all";
 const FOCUS_FILTER_NEEDS_FOCUS_TESTS = "needs-focus";
 const FOCUS_FILTER_NON_NEEDS_FOCUS_TESTS = "non-needs-focus";
 var gFocusFilterMode = FOCUS_FILTER_ALL_TESTS;
 // "<!--CLEAR-->"
 const BLANK_URL_FOR_CLEARING = "data:text/html;charset=UTF-8,%3C%21%2D%2DCLEAR%2D%2D%3E";
 var gBrowser;
 // Are we testing web content loaded in a separate process?
 var gBrowserIsRemote;           // bool
 // Are we using <iframe mozbrowser>?
 var gBrowserIsIframe;           // bool
 var gBrowserMessageManager;
 var gCanvas1, gCanvas2;
 // gCurrentCanvas is non-null between InitCurrentCanvasWithSnapshot and the next
 // RecordResult.
 var gCurrentCanvas = null;
 var gURLs;
 // Map from URI spec to the number of times it remains to be used
 var gURIUseCounts;
 // Map from URI spec to the canvas rendered for that URI
 var gURICanvases;
 var gTestResults = {
   // Successful...
   Pass: 0,
   LoadOnly: 0,
   // Unexpected...
   Exception: 0,
   FailedLoad: 0,
   UnexpectedFail: 0,
   UnexpectedPass: 0,
   AssertionUnexpected: 0,
   AssertionUnexpectedFixed: 0,
   // Known problems...
   KnownFail : 0,
   AssertionKnown: 0,
   Random : 0,
   Skip: 0,
   Slow: 0,
 };
 var gTotalTests = 0;
 var gState;
 var gCurrentURL;
 var gTestLog = [];
 var gServer;
 var gCount = 0;
 var gAssertionCount = 0;
 var gIOService;
 var gDebug;
 var gWindowUtils;
 var gSlowestTestTime = 0;
 var gSlowestTestURL;
 var gDrawWindowFlags;
 var gExpectingProcessCrash = false;
 var gExpectedCrashDumpFiles = [];
 var gUnexpectedCrashDumpFiles = { };
 var gCrashDumpDir;
 var gFailedNoPaint = false;
 // The enabled-state of the test-plugins, stored so they can be reset later
 var gTestPluginEnabledStates = null;
 const TYPE_REFTEST_EQUAL = '==';
 const TYPE_REFTEST_NOTEQUAL = '!=';
 const TYPE_LOAD = 'load';     // test without a reference (just test that it does
                               // not assert, crash, hang, or leak)
 const TYPE_SCRIPT = 'script'; // test contains individual test results
 // The order of these constants matters, since when we have a status
 // listed for a *manifest*, we combine the status with the status for
 // the test by using the *larger*.
 // FIXME: In the future, we may also want to use this rule for combining
 // statuses that are on the same line (rather than making the last one
 // win).
 const EXPECTED_PASS = 0;
 const EXPECTED_FAIL = 1;
 const EXPECTED_RANDOM = 2;
 const EXPECTED_DEATH = 3;  // test must be skipped to avoid e.g. crash/hang
 const EXPECTED_FUZZY = 4;
 // types of preference value we might want to set for a specific test
 const PREF_BOOLEAN = 0;
 const PREF_STRING  = 1;
 const PREF_INTEGER = 2;
 var gPrefsToRestore = [];
 const gProtocolRE = /^\w+:/;
 const gPrefItemRE = /^(|test-|ref-)pref\((.+?),(.*)\)$/;
 var gHttpServerPort = -1;
 // whether to run slow tests or not
 var gRunSlowTests = true;
 // whether we should skip caching canvases
 var gNoCanvasCache = false;
 var gRecycledCanvases = new Array();
 // By default we just log to stdout
 var gDumpLog = dump;
 var gVerbose = false;
 // Only dump the sandbox once, because it doesn't depend on the
 // manifest URL (yet!).
 var gDumpedConditionSandbox = false;
 function LogWarning(str)
 {
     gDumpLog("REFTEST INFO | " + str + "\n");
     gTestLog.push(str);
 }
 function LogInfo(str)
 {
     if (gVerbose)
         gDumpLog("REFTEST INFO | " + str + "\n");
     gTestLog.push(str);
 }
 function FlushTestLog()
 {
     if (!gVerbose) {
         // In verbose mode, we've dumped all these messages already.
         for (var i = 0; i < gTestLog.length; ++i) {
             gDumpLog("REFTEST INFO | Saved log: " + gTestLog[i] + "\n");
         }
     }
     gTestLog = [];
 }
 function AllocateCanvas()
 {
     if (gRecycledCanvases.length > 0)
         return gRecycledCanvases.shift();
     var canvas = gContainingWindow.document.createElementNS(XHTML_NS, "canvas");
     var r = gBrowser.getBoundingClientRect();
     canvas.setAttribute("width", Math.ceil(r.width));
     canvas.setAttribute("height", Math.ceil(r.height));
     return canvas;
 }
 function ReleaseCanvas(canvas)
 {
     // store a maximum of 2 canvases, if we're not caching
     if (!gNoCanvasCache || gRecycledCanvases.length < 2)
         gRecycledCanvases.push(canvas);
 }
 function IDForEventTarget(event)
 {
     try {
         return "'" + event.target.getAttribute('id') + "'";
     } catch (ex) {
         return "<unknown>";
     }
 }
 function getTestPlugin(aName) {
   var ph = CC["@mozilla.org/plugin/host;1"].getService(CI.nsIPluginHost);
   var tags = ph.getPluginTags();
   // Find the test plugin
   for (var i = 0; i < tags.length; i++) {
     if (tags[i].name == aName)
       return tags[i];
   }
   LogWarning("Failed to find the test-plugin.");
   return null;
 }
 this.OnRefTestLoad = function OnRefTestLoad(win)
 {
     gCrashDumpDir = CC[NS_DIRECTORY_SERVICE_CONTRACTID]
                     .getService(CI.nsIProperties)
                     .get("ProfD", CI.nsIFile);
     gCrashDumpDir.append("minidumps");
     var env = CC["@mozilla.org/process/environment;1"].
               getService(CI.nsIEnvironment);
     gVerbose = !!env.get("MOZ_REFTEST_VERBOSE");
     var prefs = Components.classes["@mozilla.org/preferences-service;1"].
                 getService(Components.interfaces.nsIPrefBranch);
     try {
         gBrowserIsRemote = prefs.getBoolPref("browser.tabs.remote.autostart");
     } catch (e) {
         gBrowserIsRemote = false;
     }
     try {
       gBrowserIsIframe = prefs.getBoolPref("reftest.browser.iframe.enabled");
     } catch (e) {
       gBrowserIsIframe = false;
     }
     if (win === undefined || win == null) {
       win = window;
     }
     if (gContainingWindow == null && win != null) {
       gContainingWindow = win;
     }
     if (gBrowserIsIframe) {
       gBrowser = gContainingWindow.document.createElementNS(XHTML_NS, "iframe");
       gBrowser.setAttribute("mozbrowser", "");
       gBrowser.setAttribute("mozapp", prefs.getCharPref("browser.manifestURL"));
     } else {
       gBrowser = gContainingWindow.document.createElementNS(XUL_NS, "xul:browser");
     }
     gBrowser.setAttribute("id", "browser");
     gBrowser.setAttribute("type", "content-primary");
     gBrowser.setAttribute("remote", gBrowserIsRemote ? "true" : "false");
     gBrowser.setAttribute("mozasyncpanzoom", "true");
     // Make sure the browser element is exactly 800x1000, no matter
     // what size our window is
     gBrowser.setAttribute("style", "min-width: 800px; min-height: 1000px; max-width: 800px; max-height: 1000px");
 #ifdef BOOTSTRAP
 #ifdef REFTEST_B2G
     var doc = gContainingWindow.document.getElementsByTagName("html")[0];
 #else
     var doc = gContainingWindow.document.getElementById('main-window');
 #endif
     while (doc.hasChildNodes()) {
       doc.removeChild(doc.firstChild);
     }
     doc.appendChild(gBrowser);
 #else
     document.getElementById("reftest-window").appendChild(gBrowser);
 #endif
     // reftests should have the test plugins enabled, not click-to-play
     let plugin1 = getTestPlugin("Test Plug-in");
     let plugin2 = getTestPlugin("Second Test Plug-in");
     if (plugin1 && plugin2) {
       gTestPluginEnabledStates = [plugin1.enabledState, plugin2.enabledState];
       plugin1.enabledState = CI.nsIPluginTag.STATE_ENABLED;
       plugin2.enabledState = CI.nsIPluginTag.STATE_ENABLED;
     } else {
       LogWarning("Could not get test plugin tags.");
     }
     gBrowserMessageManager = gBrowser.QueryInterface(CI.nsIFrameLoaderOwner)
                                      .frameLoader.messageManager;
     // The content script waits for the initial onload, then notifies
     // us.
     RegisterMessageListenersAndLoadContentScript();
 }
 function InitAndStartRefTests()
 {
     /* These prefs are optional, so we don't need to spit an error to the log */
     try {
         var prefs = Components.classes["@mozilla.org/preferences-service;1"].
                     getService(Components.interfaces.nsIPrefBranch);
     } catch(e) {
         gDumpLog("REFTEST TEST-UNEXPECTED-FAIL | | EXCEPTION: " + e + "\n");
     }
     try {
       prefs.setBoolPref("android.widget_paints_background", false);
     } catch (e) {}
     /* set the gLoadTimeout */
     try {
         gLoadTimeout = prefs.getIntPref("reftest.timeout");
     } catch(e) {
         gLoadTimeout = 5 * 60 * 1000; //5 minutes as per bug 479518
     }
     /* Get the logfile for android tests */
     try {
         var logFile = prefs.getCharPref("reftest.logFile");
         if (logFile) {
             try {
                 var f = FileUtils.File(logFile);
                 var mfl = FileUtils.openFileOutputStream(f, FileUtils.MODE_WRONLY | FileUtils.MODE_CREATE);
                 // Set to mirror to stdout as well as the file
                 gDumpLog = function (msg) {
 #ifdef BOOTSTRAP
 #ifdef REFTEST_B2G
                     dump(msg);
 #else
                     //NOTE: on android-xul, we have a libc crash if we do a dump with %7s in the string
 #endif
 #else
                     dump(msg);
 #endif
                     mfl.write(msg, msg.length);
                 };
             }
             catch(e) {
                 // If there is a problem, just use stdout
                 gDumpLog = dump;
             }
         }
     } catch(e) {}
     try {
         gRemote = prefs.getBoolPref("reftest.remote");
     } catch(e) {
         gRemote = false;
     }
     try {
         gIgnoreWindowSize = prefs.getBoolPref("reftest.ignoreWindowSize");
     } catch(e) {
         gIgnoreWindowSize = false;
     }
     /* Support for running a chunk (subset) of tests.  In separate try as this is optional */
     try {
         gTotalChunks = prefs.getIntPref("reftest.totalChunks");
         gThisChunk = prefs.getIntPref("reftest.thisChunk");
     }
     catch(e) {
         gTotalChunks = 0;
         gThisChunk = 0;
     }
     try {
         gURLFilterRegex = new RegExp(prefs.getCharPref("reftest.filter"));
     } catch(e) {}
     try {
         gFocusFilterMode = prefs.getCharPref("reftest.focusFilterMode");
     } catch(e) {}
     gWindowUtils = gContainingWindow.QueryInterface(CI.nsIInterfaceRequestor).getInterface(CI.nsIDOMWindowUtils);
     if (!gWindowUtils || !gWindowUtils.compareCanvases)
         throw "nsIDOMWindowUtils inteface missing";
     gIOService = CC[IO_SERVICE_CONTRACTID].getService(CI.nsIIOService);
     gDebug = CC[DEBUG_CONTRACTID].getService(CI.nsIDebug2);
     RegisterProcessCrashObservers();
     if (gRemote) {
         gServer = null;
     } else {
         // not all gecko applications autoregister xpcom components
         if (CC["@mozilla.org/server/jshttp;1"] === undefined) {
             var file = CC["@mozilla.org/file/directory_service;1"].
                         getService(CI.nsIProperties).get("ProfD", CI.nsIFile);
             file.appendRelativePath("extensions/reftest@mozilla.org/chrome.manifest");
             registrar = Components.manager.QueryInterface(CI.nsIComponentRegistrar);
             registrar.autoRegister(file);
         }
         gServer = CC["@mozilla.org/server/jshttp;1"].
                       createInstance(CI.nsIHttpServer);
     }
     try {
         if (gServer)
             StartHTTPServer();
     } catch (ex) {
         //gBrowser.loadURI('data:text/plain,' + ex);
         ++gTestResults.Exception;
         gDumpLog("REFTEST TEST-UNEXPECTED-FAIL | | EXCEPTION: " + ex + "\n");
         DoneTests();
     }
     // Focus the content browser.
     if (gFocusFilterMode != FOCUS_FILTER_NON_NEEDS_FOCUS_TESTS) {
         gBrowser.focus();
     }
     StartTests();
 }
 function StartHTTPServer()
 {
     gServer.registerContentType("sjs", "sjs");
     gServer.start(-1);
     gHttpServerPort = gServer.identity.primaryPort;
 }
 // Perform a Fisher-Yates shuffle of the array.
 function Shuffle(array)
 {
     for (var i = array.length - 1; i > 0; i--) {
         var j = Math.floor(Math.random() * (i + 1));
         var temp = array[i];
         array[i] = array[j];
         array[j] = temp;
     }
 }
 function StartTests()
 {
     var uri;
 #if BOOTSTRAP
     /* These prefs are optional, so we don't need to spit an error to the log */
     try {
         var prefs = Components.classes["@mozilla.org/preferences-service;1"].
                     getService(Components.interfaces.nsIPrefBranch);
     } catch(e) {
         gDumpLog("REFTEST TEST-UNEXPECTED-FAIL | | EXCEPTION: " + e + "\n");
     }
     try {
         gNoCanvasCache = prefs.getIntPref("reftest.nocache");
     } catch(e) {
         gNoCanvasCache = false;
     }
     try {
       gShuffle = prefs.getBoolPref("reftest.shuffle");
     } catch (e) {
       gShuffle = false;
     }
     try {
         gRunSlowTests = prefs.getIntPref("reftest.skipslowtests");
     } catch(e) {
         gRunSlowTests = false;
     }
     try {
         uri = prefs.getCharPref("reftest.uri");
     } catch(e) {
         uri = "";
     }
     if (uri == "") {
         gDumpLog("REFTEST TEST-UNEXPECTED-FAIL | | Unable to find reftest.uri pref.  Please ensure your profile is setup properly\n");
         DoneTests();
     }
 #else
     try {
         // Need to read the manifest once we have gHttpServerPort..
         var args = window.arguments[0].wrappedJSObject;
         if ("nocache" in args && args["nocache"])
             gNoCanvasCache = true;
         if ("skipslowtests" in args && args.skipslowtests)
             gRunSlowTests = false;
         uri = args.uri;
     } catch (e) {
         ++gTestResults.Exception;
         gDumpLog("REFTEST TEST-UNEXPECTED-FAIL | | EXCEPTION: " + ex + "\n");
         DoneTests();
     }
 #endif
     if (gShuffle) {
         gNoCanvasCache = true;
     }
     try {
         ReadTopManifest(uri);
         BuildUseCounts();
         // Filter tests which will be skipped to get a more even distribution when chunking
         // tURLs is a temporary array containing all active tests
         var tURLs = new Array();
         for (var i = 0; i < gURLs.length; ++i) {
             if (gURLs[i].expected == EXPECTED_DEATH)
                 continue;
             if (gURLs[i].needsFocus && !Focus())
                 continue;
             if (gURLs[i].slow && !gRunSlowTests)
                 continue;
             tURLs.push(gURLs[i]);
         }
         gDumpLog("REFTEST INFO | Discovered " + gURLs.length + " tests, after filtering SKIP tests, we have " + tURLs.length + "\n");
         if (gTotalChunks > 0 && gThisChunk > 0) {
             // Calculate start and end indices of this chunk if tURLs array were
             // divided evenly
             var testsPerChunk = tURLs.length / gTotalChunks;
             var start = Math.round((gThisChunk-1) * testsPerChunk);
             var end = Math.round(gThisChunk * testsPerChunk);
             // Map these indices onto the gURLs array. This avoids modifying the
             // gURLs array which prevents skipped tests from showing up in the log
             start = gThisChunk == 1 ? 0 : gURLs.indexOf(tURLs[start]);
             end = gThisChunk == gTotalChunks ? gURLs.length : gURLs.indexOf(tURLs[end + 1]) - 1;
             gURLs = gURLs.slice(start, end);
             gDumpLog("REFTEST INFO | Running chunk " + gThisChunk + " out of " + gTotalChunks + " chunks.  ");
             gDumpLog("tests " + (start+1) + "-" + end + "/" + gURLs.length + "\n");
         }
         if (gShuffle) {
             Shuffle(gURLs);
         }
         gTotalTests = gURLs.length;
         if (!gTotalTests)
             throw "No tests to run";
         gURICanvases = {};
         StartCurrentTest();
     } catch (ex) {
         //gBrowser.loadURI('data:text/plain,' + ex);
         ++gTestResults.Exception;
         gDumpLog("REFTEST TEST-UNEXPECTED-FAIL | | EXCEPTION: " + ex + "\n");
         DoneTests();
     }
 }
 function OnRefTestUnload()
 {
   let plugin1 = getTestPlugin("Test Plug-in");
   let plugin2 = getTestPlugin("Second Test Plug-in");
   if (plugin1 && plugin2) {
     plugin1.enabledState = gTestPluginEnabledStates[0];
     plugin2.enabledState = gTestPluginEnabledStates[1];
   } else {
     LogWarning("Failed to get test plugin tags.");
   }
 }
 // Read all available data from an input stream and return it
 // as a string.
 function getStreamContent(inputStream)
 {
     var streamBuf = "";
     var sis = CC["@mozilla.org/scriptableinputstream;1"].
                   createInstance(CI.nsIScriptableInputStream);
     sis.init(inputStream);
     var available;
     while ((available = sis.available()) != 0) {
         streamBuf += sis.read(available);
     }
     return streamBuf;
 }
 // Build the sandbox for fails-if(), etc., condition evaluation.
 function BuildConditionSandbox(aURL) {
     var sandbox = new Components.utils.Sandbox(aURL.spec);
     var xr = CC[NS_XREAPPINFO_CONTRACTID].getService(CI.nsIXULRuntime);
     var appInfo = CC[NS_XREAPPINFO_CONTRACTID].getService(CI.nsIXULAppInfo);
     sandbox.isDebugBuild = gDebug.isDebugBuild;
     sandbox.xulRuntime = {widgetToolkit: xr.widgetToolkit, OS: xr.OS, __exposedProps__: { widgetToolkit: "r", OS: "r", XPCOMABI: "r", shell: "r" } };
     // xr.XPCOMABI throws exception for configurations without full ABI
     // support (mobile builds on ARM)
     try {
         sandbox.xulRuntime.XPCOMABI = xr.XPCOMABI;
     } catch(e) {
         sandbox.xulRuntime.XPCOMABI = "";
     }
     var testRect = gBrowser.getBoundingClientRect();
     sandbox.smallScreen = false;
     if (gContainingWindow.innerWidth < 800 || gContainingWindow.innerHeight < 1000) {
         sandbox.smallScreen = true;
     }
     var gfxInfo = (NS_GFXINFO_CONTRACTID in CC) && CC[NS_GFXINFO_CONTRACTID].getService(CI.nsIGfxInfo);
     try {
       sandbox.d2d = gfxInfo.D2DEnabled;
     } catch (e) {
       sandbox.d2d = false;
     }
     var info = gfxInfo.getInfo();
     sandbox.azureQuartz = info.AzureCanvasBackend == "quartz";
     sandbox.azureSkia = info.AzureCanvasBackend == "skia";
     sandbox.azureSkiaGL = info.AzureSkiaAccelerated; // FIXME: assumes GL right now
     // true if we are using the same Azure backend for rendering canvas and content
     sandbox.contentSameGfxBackendAsCanvas = info.AzureContentBackend == info.AzureCanvasBackend
                                             || (info.AzureContentBackend == "none" && info.AzureCanvasBackend == "cairo");
     sandbox.layersGPUAccelerated =
       gWindowUtils.layerManagerType != "Basic";
     sandbox.layersOpenGL =
       gWindowUtils.layerManagerType == "OpenGL";
     sandbox.layersOMTC =
       gWindowUtils.layerManagerRemote == true;
     // Shortcuts for widget toolkits.
     sandbox.B2G = xr.widgetToolkit == "gonk";
     sandbox.B2GDT = appInfo.name.toLowerCase() == "b2g" && !sandbox.B2G;
     sandbox.Android = xr.OS == "Android" && !sandbox.B2G;
     sandbox.cocoaWidget = xr.widgetToolkit == "cocoa";
     sandbox.gtk2Widget = xr.widgetToolkit == "gtk2";
     sandbox.qtWidget = xr.widgetToolkit == "qt";
     sandbox.winWidget = xr.widgetToolkit == "windows";
     if (sandbox.Android) {
         var sysInfo = CC["@mozilla.org/system-info;1"].getService(CI.nsIPropertyBag2);
         // This is currently used to distinguish Android 4.0.3 (SDK version 15)
         // and later from Android 2.x
         sandbox.AndroidVersion = sysInfo.getPropertyAsInt32("version");
     }
 #if MOZ_ASAN
     sandbox.AddressSanitizer = true;
 #else
     sandbox.AddressSanitizer = false;
 #endif
 #if MOZ_WEBRTC
     sandbox.webrtc = true;
 #else
     sandbox.webrtc = false;
 #endif
     var hh = CC[NS_NETWORK_PROTOCOL_CONTRACTID_PREFIX + "http"].
                  getService(CI.nsIHttpProtocolHandler);
     sandbox.http = { __exposedProps__: {} };
     for each (var prop in [ "userAgent", "appName", "appVersion",
                             "vendor", "vendorSub",
                             "product", "productSub",
                             "platform", "oscpu", "language", "misc" ]) {
         sandbox.http[prop] = hh[prop];
         sandbox.http.__exposedProps__[prop] = "r";
     }
     // Set OSX to the Mac OS X version for Mac, and 0 otherwise.
     var osxmatch = /Mac OS X (\d+.\d+)$/.exec(hh.oscpu);
     sandbox.OSX = osxmatch ? parseFloat(osxmatch[1]) : 0;
     // see if we have the test plugin available,
     // and set a sandox prop accordingly
     var navigator = gContainingWindow.navigator;
     var testPlugin = navigator.plugins["Test Plug-in"];
     sandbox.haveTestPlugin = !!testPlugin;
     // Set a flag on sandbox if the windows default theme is active
     var box = gContainingWindow.document.createElement("box");
     box.setAttribute("id", "_box_windowsDefaultTheme");
     gContainingWindow.document.documentElement.appendChild(box);
     sandbox.windowsDefaultTheme = (gContainingWindow.getComputedStyle(box, null).display == "none");
     gContainingWindow.document.documentElement.removeChild(box);
     var prefs = CC["@mozilla.org/preferences-service;1"].
                 getService(CI.nsIPrefBranch);
     try {
         sandbox.nativeThemePref = !prefs.getBoolPref("mozilla.widget.disable-native-theme");
     } catch (e) {
         sandbox.nativeThemePref = true;
     }
     sandbox.prefs = {
         __exposedProps__: {
             getBoolPref: 'r',
             getIntPref: 'r',
         },
         _prefs:      prefs,
         getBoolPref: function(p) { return this._prefs.getBoolPref(p); },
         getIntPref:  function(p) { return this._prefs.getIntPref(p); }
     }
     sandbox.testPluginIsOOP = function () {
         try {
             netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
         } catch (ex) {}
         var prefservice = Components.classes["@mozilla.org/preferences-service;1"]
                                     .getService(CI.nsIPrefBranch);
         var testPluginIsOOP = false;
         if (navigator.platform.indexOf("Mac") == 0) {
             var xulRuntime = Components.classes["@mozilla.org/xre/app-info;1"]
                                        .getService(CI.nsIXULAppInfo)
                                        .QueryInterface(CI.nsIXULRuntime);
             if (xulRuntime.XPCOMABI.match(/x86-/)) {
                 try {
                     testPluginIsOOP = prefservice.getBoolPref("dom.ipc.plugins.enabled.i386.test.plugin");
                 } catch (e) {
                     testPluginIsOOP = prefservice.getBoolPref("dom.ipc.plugins.enabled.i386");
                 }
             }
             else if (xulRuntime.XPCOMABI.match(/x86_64-/)) {
                 try {
                     testPluginIsOOP = prefservice.getBoolPref("dom.ipc.plugins.enabled.x86_64.test.plugin");
                 } catch (e) {
                     testPluginIsOOP = prefservice.getBoolPref("dom.ipc.plugins.enabled.x86_64");
                 }
             }
         }
         else {
             testPluginIsOOP = prefservice.getBoolPref("dom.ipc.plugins.enabled");
         }
         return testPluginIsOOP;
     };
     // Tests shouldn't care about this except for when they need to
     // crash the content process
     sandbox.browserIsRemote = gBrowserIsRemote;
     // Distinguish the Fennecs:
     sandbox.xulFennec    = sandbox.Android &&  sandbox.browserIsRemote;
     sandbox.nativeFennec = sandbox.Android && !sandbox.browserIsRemote;
     if (!gDumpedConditionSandbox) {
         dump("REFTEST INFO | Dumping JSON representation of sandbox \n");
         dump("REFTEST INFO | " + JSON.stringify(sandbox) + " \n");
         gDumpedConditionSandbox = true;
     }
     return sandbox;
 }
 function AddPrefSettings(aWhere, aPrefName, aPrefValExpression, aSandbox, aTestPrefSettings, aRefPrefSettings)
 {
     var prefVal = Components.utils.evalInSandbox("(" + aPrefValExpression + ")", aSandbox);
     var prefType;
     var valType = typeof(prefVal);
     if (valType == "boolean") {
         prefType = PREF_BOOLEAN;
     } else if (valType == "string") {
         prefType = PREF_STRING;
     } else if (valType == "number" && (parseInt(prefVal) == prefVal)) {
         prefType = PREF_INTEGER;
     } else {
         return false;
     }
     var setting = { name: aPrefName,
                     type: prefType,
                     value: prefVal };
     if (aWhere != "ref-") {
         aTestPrefSettings.push(setting);
     }
     if (aWhere != "test-") {
         aRefPrefSettings.push(setting);
     }
     return true;
 }
 function ReadTopManifest(aFileURL)
 {
     gURLs = new Array();
     var url = gIOService.newURI(aFileURL, null, null);
     if (!url)
         throw "Expected a file or http URL for the manifest.";
     ReadManifest(url, EXPECTED_PASS);
 }
 function AddTestItem(aTest)
 {
     if (gURLFilterRegex && !gURLFilterRegex.test(aTest.url1.spec))
         return;
     if (gFocusFilterMode == FOCUS_FILTER_NEEDS_FOCUS_TESTS &&
         !aTest.needsFocus)
         return;
     if (gFocusFilterMode == FOCUS_FILTER_NON_NEEDS_FOCUS_TESTS &&
         aTest.needsFocus)
         return;
     gURLs.push(aTest);
 }
 // Note: If you materially change the reftest manifest parsing,
 // please keep the parser in print-manifest-dirs.py in sync.
 function ReadManifest(aURL, inherited_status)
 {
     var secMan = CC[NS_SCRIPTSECURITYMANAGER_CONTRACTID]
                      .getService(CI.nsIScriptSecurityManager);
     var listURL = aURL;
     var channel = gIOService.newChannelFromURI(aURL);
     var inputStream = channel.open();
     if (channel instanceof Components.interfaces.nsIHttpChannel
         && channel.responseStatus != 200) {
       gDumpLog("REFTEST TEST-UNEXPECTED-FAIL | | HTTP ERROR : " +
         channel.responseStatus + "\n");
     }
     var streamBuf = getStreamContent(inputStream);
     inputStream.close();
     var lines = streamBuf.split(/\n|\r|\r\n/);
     // Build the sandbox for fails-if(), etc., condition evaluation.
     var sandbox = BuildConditionSandbox(aURL);
     var lineNo = 0;
     var urlprefix = "";
     var defaultTestPrefSettings = [], defaultRefPrefSettings = [];
     for each (var str in lines) {
         ++lineNo;
         if (str.charAt(0) == "#")
             continue; // entire line was a comment
         var i = str.search(/\s+#/);
         if (i >= 0)
             str = str.substring(0, i);
         // strip leading and trailing whitespace
         str = str.replace(/^\s*/, '').replace(/\s*$/, '');
         if (!str || str == "")
             continue;
         var items = str.split(/\s+/); // split on whitespace
         if (items[0] == "url-prefix") {
             if (items.length != 2)
                 throw "url-prefix requires one url in manifest file " + aURL.spec + " line " + lineNo;
             urlprefix = items[1];
             continue;
         }
         if (items[0] == "default-preferences") {
             var m;
             var item;
             defaultTestPrefSettings = [];
             defaultRefPrefSettings = [];
             items.shift();
             while ((item = items.shift())) {
                 if (!(m = item.match(gPrefItemRE))) {
                     throw "Unexpected item in default-preferences list in manifest file " + aURL.spec + " line " + lineNo;
                 }
                 if (!AddPrefSettings(m[1], m[2], m[3], sandbox, defaultTestPrefSettings, defaultRefPrefSettings)) {
                     throw "Error in pref value in manifest file " + aURL.spec + " line " + lineNo;
                 }
             }
             continue;
         }
         var expected_status = EXPECTED_PASS;
         var allow_silent_fail = false;
         var minAsserts = 0;
         var maxAsserts = 0;
         var needs_focus = false;
         var slow = false;
         var testPrefSettings = defaultTestPrefSettings.concat();
         var refPrefSettings = defaultRefPrefSettings.concat();
         var fuzzy_max_delta = 2;
         var fuzzy_max_pixels = 1;
         while (items[0].match(/^(fails|needs-focus|random|skip|asserts|slow|require-or|silentfail|pref|test-pref|ref-pref|fuzzy)/)) {
             var item = items.shift();
             var stat;
             var cond;
             var m = item.match(/^(fails|random|skip|silentfail)-if(\(.*\))$/);
             if (m) {
                 stat = m[1];
                 // Note: m[2] contains the parentheses, and we want them.
                 cond = Components.utils.evalInSandbox(m[2], sandbox);
             } else if (item.match(/^(fails|random|skip)$/)) {
                 stat = item;
                 cond = true;
             } else if (item == "needs-focus") {
                 needs_focus = true;
                 cond = false;
             } else if ((m = item.match(/^asserts\((\d+)(-\d+)?\)$/))) {
                 cond = false;
                 minAsserts = Number(m[1]);
                 maxAsserts = (m[2] == undefined) ? minAsserts
                                                  : Number(m[2].substring(1));
             } else if ((m = item.match(/^asserts-if\((.*?),(\d+)(-\d+)?\)$/))) {
                 cond = false;
                 if (Components.utils.evalInSandbox("(" + m[1] + ")", sandbox)) {
                     minAsserts = Number(m[2]);
                     maxAsserts =
                       (m[3] == undefined) ? minAsserts
                                           : Number(m[3].substring(1));
                 }
             } else if (item == "slow") {
                 cond = false;
                 slow = true;
             } else if ((m = item.match(/^require-or\((.*?)\)$/))) {
                 var args = m[1].split(/,/);
                 if (args.length != 2) {
                     throw "Error 7 in manifest file " + aURL.spec + " line " + lineNo + ": wrong number of args to require-or";
                 }
                 var [precondition_str, fallback_action] = args;
                 var preconditions = precondition_str.split(/&&/);
                 cond = false;
                 for each (var precondition in preconditions) {
                     if (precondition === "debugMode") {
                         // Currently unimplemented. Requires asynchronous
                         // JSD call + getting an event while no JS is running
                         stat = fallback_action;
                         cond = true;
                         break;
                     } else if (precondition === "true") {
                         // For testing
                     } else {
                         // Unknown precondition. Assume it is unimplemented.
                         stat = fallback_action;
                         cond = true;
                         break;
                     }
                 }
             } else if ((m = item.match(/^slow-if\((.*?)\)$/))) {
                 cond = false;
                 if (Components.utils.evalInSandbox("(" + m[1] + ")", sandbox))
                     slow = true;
             } else if (item == "silentfail") {
                 cond = false;
                 allow_silent_fail = true;
             } else if ((m = item.match(gPrefItemRE))) {
                 cond = false;
                 if (!AddPrefSettings(m[1], m[2], m[3], sandbox, testPrefSettings, refPrefSettings)) {
                     throw "Error in pref value in manifest file " + aURL.spec + " line " + lineNo;
                 }
             } else if ((m = item.match(/^fuzzy\((\d+),(\d+)\)$/))) {
               cond = false;
               expected_status = EXPECTED_FUZZY;
               fuzzy_max_delta = Number(m[1]);
               fuzzy_max_pixels = Number(m[2]);
             } else if ((m = item.match(/^fuzzy-if\((.*?),(\d+),(\d+)\)$/))) {
               cond = false;
               if (Components.utils.evalInSandbox("(" + m[1] + ")", sandbox)) {
                 expected_status = EXPECTED_FUZZY;
                 fuzzy_max_delta = Number(m[2]);
                 fuzzy_max_pixels = Number(m[3]);
               }
             } else {
                 throw "Error 1 in manifest file " + aURL.spec + " line " + lineNo;
             }
             if (cond) {
                 if (stat == "fails") {
                     expected_status = EXPECTED_FAIL;
                 } else if (stat == "random") {
                     expected_status = EXPECTED_RANDOM;
                 } else if (stat == "skip") {
                     expected_status = EXPECTED_DEATH;
                 } else if (stat == "silentfail") {
                     allow_silent_fail = true;
                 }
             }
         }
         expected_status = Math.max(expected_status, inherited_status);
         if (minAsserts > maxAsserts) {
             throw "Bad range in manifest file " + aURL.spec + " line " + lineNo;
         }
         var runHttp = false;
         var httpDepth;
         if (items[0] == "HTTP") {
             runHttp = (aURL.scheme == "file"); // We can't yet run the local HTTP server
                                                // for non-local reftests.
             httpDepth = 0;
             items.shift();
         } else if (items[0].match(/HTTP\(\.\.(\/\.\.)*\)/)) {
             // Accept HTTP(..), HTTP(../..), HTTP(../../..), etc.
             runHttp = (aURL.scheme == "file"); // We can't yet run the local HTTP server
                                                // for non-local reftests.
             httpDepth = (items[0].length - 5) / 3;
             items.shift();
         }
         // do not prefix the url for include commands or urls specifying
         // a protocol
         if (urlprefix && items[0] != "include") {
             if (items.length > 1 && !items[1].match(gProtocolRE)) {
                 items[1] = urlprefix + items[1];
             }
             if (items.length > 2 && !items[2].match(gProtocolRE)) {
                 items[2] = urlprefix + items[2];
             }
         }
         var principal = secMan.getSimpleCodebasePrincipal(aURL);
         if (items[0] == "include") {
             if (items.length != 2 || runHttp)
                 throw "Error 2 in manifest file " + aURL.spec + " line " + lineNo;
             var incURI = gIOService.newURI(items[1], null, listURL);
             secMan.checkLoadURIWithPrincipal(principal, incURI,
                                              CI.nsIScriptSecurityManager.DISALLOW_SCRIPT);
             ReadManifest(incURI, expected_status);
         } else if (items[0] == TYPE_LOAD) {
             if (items.length != 2 ||
                 (expected_status != EXPECTED_PASS &&
                  expected_status != EXPECTED_DEATH))
                 throw "Error 3 in manifest file " + aURL.spec + " line " + lineNo;
             var [testURI] = runHttp
                             ? ServeFiles(principal, httpDepth,
                                          listURL, [items[1]])
                             : [gIOService.newURI(items[1], null, listURL)];
             var prettyPath = runHttp
                            ? gIOService.newURI(items[1], null, listURL).spec
                            : testURI.spec;
             secMan.checkLoadURIWithPrincipal(principal, testURI,
                                              CI.nsIScriptSecurityManager.DISALLOW_SCRIPT);
             AddTestItem({ type: TYPE_LOAD,
                           expected: expected_status,
                           allowSilentFail: allow_silent_fail,
                           prettyPath: prettyPath,
                           minAsserts: minAsserts,
                           maxAsserts: maxAsserts,
                           needsFocus: needs_focus,
                           slow: slow,
                           prefSettings1: testPrefSettings,
                           prefSettings2: refPrefSettings,
                           fuzzyMaxDelta: fuzzy_max_delta,
                           fuzzyMaxPixels: fuzzy_max_pixels,
                           url1: testURI,
                           url2: null });
         } else if (items[0] == TYPE_SCRIPT) {
             if (items.length != 2)
                 throw "Error 4 in manifest file " + aURL.spec + " line " + lineNo;
             var [testURI] = runHttp
                             ? ServeFiles(principal, httpDepth,
                                          listURL, [items[1]])
                             : [gIOService.newURI(items[1], null, listURL)];
             var prettyPath = runHttp
                            ? gIOService.newURI(items[1], null, listURL).spec
                            : testURI.spec;
             secMan.checkLoadURIWithPrincipal(principal, testURI,
                                              CI.nsIScriptSecurityManager.DISALLOW_SCRIPT);
             AddTestItem({ type: TYPE_SCRIPT,
                           expected: expected_status,
                           allowSilentFail: allow_silent_fail,
                           prettyPath: prettyPath,
                           minAsserts: minAsserts,
                           maxAsserts: maxAsserts,
                           needsFocus: needs_focus,
                           slow: slow,
                           prefSettings1: testPrefSettings,
                           prefSettings2: refPrefSettings,
                           fuzzyMaxDelta: fuzzy_max_delta,
                           fuzzyMaxPixels: fuzzy_max_pixels,
                           url1: testURI,
                           url2: null });
         } else if (items[0] == TYPE_REFTEST_EQUAL || items[0] == TYPE_REFTEST_NOTEQUAL) {
             if (items.length != 3)
                 throw "Error 5 in manifest file " + aURL.spec + " line " + lineNo;
             var [testURI, refURI] = runHttp
                                   ? ServeFiles(principal, httpDepth,
                                                listURL, [items[1], items[2]])
                                   : [gIOService.newURI(items[1], null, listURL),
                                      gIOService.newURI(items[2], null, listURL)];
             var prettyPath = runHttp
                            ? gIOService.newURI(items[1], null, listURL).spec
                            : testURI.spec;
             secMan.checkLoadURIWithPrincipal(principal, testURI,
                                              CI.nsIScriptSecurityManager.DISALLOW_SCRIPT);
             secMan.checkLoadURIWithPrincipal(principal, refURI,
                                              CI.nsIScriptSecurityManager.DISALLOW_SCRIPT);
             AddTestItem({ type: items[0],
                           expected: expected_status,
                           allowSilentFail: allow_silent_fail,
                           prettyPath: prettyPath,
                           minAsserts: minAsserts,
                           maxAsserts: maxAsserts,
                           needsFocus: needs_focus,
                           slow: slow,
                           prefSettings1: testPrefSettings,
                           prefSettings2: refPrefSettings,
                           fuzzyMaxDelta: fuzzy_max_delta,
                           fuzzyMaxPixels: fuzzy_max_pixels,
                           url1: testURI,
                           url2: refURI });
         } else {
             throw "Error 6 in manifest file " + aURL.spec + " line " + lineNo;
         }
     }
 }
 function AddURIUseCount(uri)
 {
     if (uri == null)
         return;
     var spec = uri.spec;
     if (spec in gURIUseCounts) {
         gURIUseCounts[spec]++;
     } else {
         gURIUseCounts[spec] = 1;
     }
 }
 function BuildUseCounts()
 {
     gURIUseCounts = {};
     for (var i = 0; i < gURLs.length; ++i) {
         var url = gURLs[i];
         if (url.expected != EXPECTED_DEATH &&
             (url.type == TYPE_REFTEST_EQUAL ||
              url.type == TYPE_REFTEST_NOTEQUAL)) {
             if (url.prefSettings1.length == 0) {
                 AddURIUseCount(gURLs[i].url1);
             }
             if (url.prefSettings2.length == 0) {
                 AddURIUseCount(gURLs[i].url2);
             }
         }
     }
 }
 function ServeFiles(manifestPrincipal, depth, aURL, files)
 {
     var listURL = aURL.QueryInterface(CI.nsIFileURL);
     var directory = listURL.file.parent;
     // Allow serving a tree that's an ancestor of the directory containing
     // the files so that they can use resources in ../ (etc.).
     var dirPath = "/";
     while (depth > 0) {
         dirPath = "/" + directory.leafName + dirPath;
         directory = directory.parent;
         --depth;
     }
     gCount++;
     var path = "/" + Date.now() + "/" + gCount;
     gServer.registerDirectory(path + "/", directory);
     var secMan = CC[NS_SCRIPTSECURITYMANAGER_CONTRACTID]
                      .getService(CI.nsIScriptSecurityManager);
     var testbase = gIOService.newURI("http://localhost:" + gHttpServerPort +
                                      path + dirPath, null, null);
     function FileToURI(file)
     {
         // Only serve relative URIs via the HTTP server, not absolute
         // ones like about:blank.
         var testURI = gIOService.newURI(file, null, testbase);
         // XXX necessary?  manifestURL guaranteed to be file, others always HTTP
         secMan.checkLoadURIWithPrincipal(manifestPrincipal, testURI,
                                          CI.nsIScriptSecurityManager.DISALLOW_SCRIPT);
         return testURI;
     }
     return files.map(FileToURI);
 }
 // Return true iff this window is focused when this function returns.
 function Focus()
 {
     var fm = CC["@mozilla.org/focus-manager;1"].getService(CI.nsIFocusManager);
     fm.focusedWindow = gContainingWindow;
 #ifdef XP_MACOSX
     try {
         var dock = CC["@mozilla.org/widget/macdocksupport;1"].getService(CI.nsIMacDockSupport);
         dock.activateApplication(true);
     } catch(ex) {
     }
 #endif // XP_MACOSX
     return true;
 }
 function Blur()
 {
     // On non-remote reftests, this will transfer focus to the dummy window
     // we created to hold focus for non-needs-focus tests.  Buggy tests
     // (ones which require focus but don't request needs-focus) will then
     // fail.
     gContainingWindow.blur();
 }
 function StartCurrentTest()
 {
     gTestLog = [];
     // make sure we don't run tests that are expected to kill the browser
     while (gURLs.length > 0) {
         var test = gURLs[0];
         if (test.expected == EXPECTED_DEATH) {
             ++gTestResults.Skip;
             gDumpLog("REFTEST TEST-KNOWN-FAIL | " + test.url1.spec + " | (SKIP)\n");
             gURLs.shift();
         } else if (test.needsFocus && !Focus()) {
             // FIXME: Marking this as a known fail is dangerous!  What
             // if it starts failing all the time?
             ++gTestResults.Skip;
             gDumpLog("REFTEST TEST-KNOWN-FAIL | " + test.url1.spec + " | (SKIPPED; COULDN'T GET FOCUS)\n");
             gURLs.shift();
         } else if (test.slow && !gRunSlowTests) {
             ++gTestResults.Slow;
             gDumpLog("REFTEST TEST-KNOWN-SLOW | " + test.url1.spec + " | (SLOW)\n");
             gURLs.shift();
         } else {
             break;
         }
     }
     if (gURLs.length == 0) {
         RestoreChangedPreferences();
         DoneTests();
     }
     else {
         gDumpLog("REFTEST TEST-START | " + gURLs[0].prettyPath + "\n");
         if (!gURLs[0].needsFocus) {
             Blur();
         }
         var currentTest = gTotalTests - gURLs.length;
         gContainingWindow.document.title = "reftest: " + currentTest + " / " + gTotalTests +
             " (" + Math.floor(100 * (currentTest / gTotalTests)) + "%)";
         StartCurrentURI(1);
     }
 }
 function StartCurrentURI(aState)
 {
     gState = aState;
     gCurrentURL = gURLs[0]["url" + aState].spec;
     RestoreChangedPreferences();
     var prefSettings = gURLs[0]["prefSettings" + aState];
     if (prefSettings.length > 0) {
         var prefs = Components.classes["@mozilla.org/preferences-service;1"].
                     getService(Components.interfaces.nsIPrefBranch);
         var badPref = undefined;
         try {
             prefSettings.forEach(function(ps) {
                 var oldVal;
                 if (ps.type == PREF_BOOLEAN) {
                     try {
                         oldVal = prefs.getBoolPref(ps.name);
                     } catch (e) {
                         badPref = "boolean preference '" + ps.name + "'";
                         throw "bad pref";
                     }
                 } else if (ps.type == PREF_STRING) {
                     try {
                         oldVal = prefs.getCharPref(ps.name);
                     } catch (e) {
                         badPref = "string preference '" + ps.name + "'";
                         throw "bad pref";
                     }
                 } else if (ps.type == PREF_INTEGER) {
                     try {
                         oldVal = prefs.getIntPref(ps.name);
                     } catch (e) {
                         badPref = "integer preference '" + ps.name + "'";
                         throw "bad pref";
                     }
                 } else {
                     throw "internal error - unknown preference type";
                 }
                 if (oldVal != ps.value) {
                     gPrefsToRestore.push( { name: ps.name,
                                             type: ps.type,
                                             value: oldVal } );
                     var value = ps.value;
                     if (ps.type == PREF_BOOLEAN) {
                         prefs.setBoolPref(ps.name, value);
                     } else if (ps.type == PREF_STRING) {
                         prefs.setCharPref(ps.name, value);
                         value = '"' + value + '"';
                     } else if (ps.type == PREF_INTEGER) {
                         prefs.setIntPref(ps.name, value);
                     }
                     gDumpLog("SET PREFERENCE pref(" + ps.name + "," + value + ")\n");
                 }
             });
         } catch (e) {
             if (e == "bad pref") {
                 var test = gURLs[0];
                 if (test.expected == EXPECTED_FAIL) {
                     gDumpLog("REFTEST TEST-KNOWN-FAIL | " + test.url1.spec +
                              " | (SKIPPED; " + badPref + " not known or wrong type)\n");
                     ++gTestResults.Skip;
                 } else {
                     gDumpLog("REFTEST TEST-UNEXPECTED-FAIL | " + test.url1.spec +
                              " | " + badPref + " not known or wrong type\n");
                     ++gTestResults.UnexpectedFail;
                 }
             } else {
                 throw e;
             }
         }
         if (badPref != undefined) {
             // skip the test that had a bad preference
             gURLs.shift();
             StartCurrentTest();
             return;
         }
     }
     if (prefSettings.length == 0 &&
         gURICanvases[gCurrentURL] &&
         (gURLs[0].type == TYPE_REFTEST_EQUAL ||
          gURLs[0].type == TYPE_REFTEST_NOTEQUAL) &&
         gURLs[0].maxAsserts == 0) {
         // Pretend the document loaded --- RecordResult will notice
         // there's already a canvas for this URL
         gContainingWindow.setTimeout(RecordResult, 0);
     } else {
         var currentTest = gTotalTests - gURLs.length;
         gDumpLog("REFTEST TEST-LOAD | " + gCurrentURL + " | " + currentTest + " / " + gTotalTests +
             " (" + Math.floor(100 * (currentTest / gTotalTests)) + "%)\n");
         LogInfo("START " + gCurrentURL);
         var type = gURLs[0].type
         if (TYPE_SCRIPT == type) {
             SendLoadScriptTest(gCurrentURL, gLoadTimeout);
         } else {
             SendLoadTest(type, gCurrentURL, gLoadTimeout);
         }
     }
 }
 function DoneTests()
 {
     gDumpLog("REFTEST FINISHED: Slowest test took " + gSlowestTestTime +
          "ms (" + gSlowestTestURL + ")\n");
     gDumpLog("REFTEST INFO | Result summary:\n");
     var count = gTestResults.Pass + gTestResults.LoadOnly;
     gDumpLog("REFTEST INFO | Successful: " + count + " (" +
              gTestResults.Pass + " pass, " +
              gTestResults.LoadOnly + " load only)\n");
     count = gTestResults.Exception + gTestResults.FailedLoad +
             gTestResults.UnexpectedFail + gTestResults.UnexpectedPass +
             gTestResults.AssertionUnexpected +
             gTestResults.AssertionUnexpectedFixed;
     gDumpLog("REFTEST INFO | Unexpected: " + count + " (" +
              gTestResults.UnexpectedFail + " unexpected fail, " +
              gTestResults.UnexpectedPass + " unexpected pass, " +
              gTestResults.AssertionUnexpected + " unexpected asserts, " +
              gTestResults.AssertionUnexpectedFixed + " unexpected fixed asserts, " +
              gTestResults.FailedLoad + " failed load, " +
              gTestResults.Exception + " exception)\n");
     count = gTestResults.KnownFail + gTestResults.AssertionKnown +
             gTestResults.Random + gTestResults.Skip + gTestResults.Slow;
     gDumpLog("REFTEST INFO | Known problems: " + count + " (" +
              gTestResults.KnownFail + " known fail, " +
              gTestResults.AssertionKnown + " known asserts, " +
              gTestResults.Random + " random, " +
              gTestResults.Skip + " skipped, " +
              gTestResults.Slow + " slow)\n");
     gDumpLog("REFTEST INFO | Total canvas count = " + gRecycledCanvases.length + "\n");
     gDumpLog("REFTEST TEST-START | Shutdown\n");
     function onStopped() {
         let appStartup = CC["@mozilla.org/toolkit/app-startup;1"].getService(CI.nsIAppStartup);
         appStartup.quit(CI.nsIAppStartup.eForceQuit);
     }
     if (gServer) {
         gServer.stop(onStopped);
     }
     else {
         onStopped();
     }
 }
 function UpdateCanvasCache(url, canvas)
 {
     var spec = url.spec;
     --gURIUseCounts[spec];
     if (gNoCanvasCache || gURIUseCounts[spec] == 0) {
         ReleaseCanvas(canvas);
         delete gURICanvases[spec];
     } else if (gURIUseCounts[spec] > 0) {
         gURICanvases[spec] = canvas;
     } else {
         throw "Use counts were computed incorrectly";
     }
 }
 // Recompute drawWindow flags for every drawWindow operation.
 // We have to do this every time since our window can be
 // asynchronously resized (e.g. by the window manager, to make
 // it fit on screen) at unpredictable times.
 // Fortunately this is pretty cheap.
 function DoDrawWindow(ctx, x, y, w, h)
 {
     var flags = ctx.DRAWWINDOW_DRAW_CARET | ctx.DRAWWINDOW_DRAW_VIEW;
     var testRect = gBrowser.getBoundingClientRect();
     if (gIgnoreWindowSize ||
         (0 <= testRect.left &&
 <= testRect.top &&
          gContainingWindow.innerWidth >= testRect.right &&
          gContainingWindow.innerHeight >= testRect.bottom)) {
         // We can use the window's retained layer manager
         // because the window is big enough to display the entire
         // browser element
         flags |= ctx.DRAWWINDOW_USE_WIDGET_LAYERS;
     } else if (gBrowserIsRemote) {
         gDumpLog("REFTEST TEST-UNEXPECTED-FAIL | " + gCurrentURL + " | can't drawWindow remote content\n");
         ++gTestResults.Exception;
     }
     if (gDrawWindowFlags != flags) {
         // Every time the flags change, dump the new state.
         gDrawWindowFlags = flags;
         var flagsStr = "DRAWWINDOW_DRAW_CARET | DRAWWINDOW_DRAW_VIEW";
         if (flags & ctx.DRAWWINDOW_USE_WIDGET_LAYERS) {
             flagsStr += " | DRAWWINDOW_USE_WIDGET_LAYERS";
         } else {
             // Output a special warning because we need to be able to detect
             // this whenever it happens.
             gDumpLog("REFTEST TEST-UNEXPECTED-FAIL | WARNING: USE_WIDGET_LAYERS disabled\n");
         }
         gDumpLog("REFTEST INFO | drawWindow flags = " + flagsStr +
                  "; window size = " + gContainingWindow.innerWidth + "," + gContainingWindow.innerHeight +
                  "; test browser size = " + testRect.width + "," + testRect.height +
                  "\n");
     }
     LogInfo("DoDrawWindow " + x + "," + y + "," + w + "," + h);
     ctx.drawWindow(gContainingWindow, x, y, w, h, "rgb(255,255,255)",
                    gDrawWindowFlags);
 }
 function InitCurrentCanvasWithSnapshot()
 {
     LogInfo("Initializing canvas snapshot");
     if (gURLs[0].type == TYPE_LOAD || gURLs[0].type == TYPE_SCRIPT) {
         // We don't want to snapshot this kind of test
         return false;
     }
     if (!gCurrentCanvas) {
         gCurrentCanvas = AllocateCanvas();
     }
     var ctx = gCurrentCanvas.getContext("2d");
     DoDrawWindow(ctx, 0, 0, gCurrentCanvas.width, gCurrentCanvas.height);
     return true;
 }
 function UpdateCurrentCanvasForInvalidation(rects)
 {
     LogInfo("Updating canvas for invalidation");
     if (!gCurrentCanvas) {
         return;
     }
     var ctx = gCurrentCanvas.getContext("2d");
     for (var i = 0; i < rects.length; ++i) {
         var r = rects[i];
         // Set left/top/right/bottom to pixel boundaries
         var left = Math.floor(r.left);
         var top = Math.floor(r.top);
         var right = Math.ceil(r.right);
         var bottom = Math.ceil(r.bottom);
         ctx.save();
         ctx.translate(left, top);
         DoDrawWindow(ctx, left, top, right - left, bottom - top);
         ctx.restore();
     }
 }
 function UpdateWholeCurrentCanvasForInvalidation()
 {
     LogInfo("Updating entire canvas for invalidation");
     if (!gCurrentCanvas) {
         return;
     }
     var ctx = gCurrentCanvas.getContext("2d");
     DoDrawWindow(ctx, 0, 0, gCurrentCanvas.width, gCurrentCanvas.height);
 }
 function RecordResult(testRunTime, errorMsg, scriptResults)
 {
     LogInfo("RecordResult fired");
     // Keep track of which test was slowest, and how long it took.
     if (testRunTime > gSlowestTestTime) {
         gSlowestTestTime = testRunTime;
         gSlowestTestURL  = gCurrentURL;
     }
     // Not 'const ...' because of 'EXPECTED_*' value dependency.
     var outputs = {};
     const randomMsg = "(EXPECTED RANDOM)";
     outputs[EXPECTED_PASS] = {
         true:  {s: "TEST-PASS"                  , n: "Pass"},
         false: {s: "TEST-UNEXPECTED-FAIL"       , n: "UnexpectedFail"}
     };
     outputs[EXPECTED_FAIL] = {
         true:  {s: "TEST-UNEXPECTED-PASS"       , n: "UnexpectedPass"},
         false: {s: "TEST-KNOWN-FAIL"            , n: "KnownFail"}
     };
     outputs[EXPECTED_RANDOM] = {
         true:  {s: "TEST-PASS" + randomMsg      , n: "Random"},
         false: {s: "TEST-KNOWN-FAIL" + randomMsg, n: "Random"}
     };
     outputs[EXPECTED_FUZZY] = outputs[EXPECTED_PASS];
     var output;
     if (gURLs[0].type == TYPE_LOAD) {
         ++gTestResults.LoadOnly;
         gDumpLog("REFTEST TEST-PASS | " + gURLs[0].prettyPath + " | (LOAD ONLY)\n");
         gCurrentCanvas = null;
         FinishTestItem();
         return;
     }
     if (gURLs[0].type == TYPE_SCRIPT) {
         var expected = gURLs[0].expected;
         if (errorMsg) {
             // Force an unexpected failure to alert the test author to fix the test.
             expected = EXPECTED_PASS;
         } else if (scriptResults.length == 0) {
              // This failure may be due to a JavaScript Engine bug causing
              // early termination of the test. If we do not allow silent
              // failure, report an error.
              if (!gURLs[0].allowSilentFail)
                  errorMsg = "No test results reported. (SCRIPT)\n";
              else
                  gDumpLog("REFTEST INFO | An expected silent failure occurred \n");
         }
         if (errorMsg) {
             output = outputs[expected][false];
             ++gTestResults[output.n];
             var result = "REFTEST " + output.s + " | " +
                 gURLs[0].prettyPath + " | " + // the URL being tested
                 errorMsg;
             gDumpLog(result);
             FinishTestItem();
             return;
         }
         var anyFailed = scriptResults.some(function(result) { return !result.passed; });
         var outputPair;
         if (anyFailed && expected == EXPECTED_FAIL) {
             // If we're marked as expected to fail, and some (but not all) tests
             // passed, treat those tests as though they were marked random
             // (since we can't tell whether they were really intended to be
             // marked failing or not).
             outputPair = { true: outputs[EXPECTED_RANDOM][true],
                            false: outputs[expected][false] };
         } else {
             outputPair = outputs[expected];
         }
         var index = 0;
         scriptResults.forEach(function(result) {
                 var output = outputPair[result.passed];
                 ++gTestResults[output.n];
                 result = "REFTEST " + output.s + " | " +
                     gURLs[0].prettyPath + " | " + // the URL being tested
                     result.description + " item " + (++index) + "\n";
                 gDumpLog(result);
             });
         if (anyFailed && expected == EXPECTED_PASS) {
             FlushTestLog();
         }
         FinishTestItem();
         return;
     }
     if (gURLs[0]["prefSettings" + gState].length == 0 &&
         gURICanvases[gCurrentURL]) {
         gCurrentCanvas = gURICanvases[gCurrentURL];
     }
     if (gCurrentCanvas == null) {
         gDumpLog("REFTEST TEST-UNEXPECTED-FAIL | " + gCurrentURL + " | program error managing snapshots\n");
         ++gTestResults.Exception;
     }
     if (gState == 1) {
         gCanvas1 = gCurrentCanvas;
     } else {
         gCanvas2 = gCurrentCanvas;
     }
     gCurrentCanvas = null;
     ResetRenderingState();
     switch (gState) {
         case 1:
             // First document has been loaded.
             // Proceed to load the second document.
             CleanUpCrashDumpFiles();
             StartCurrentURI(2);
             break;
         case 2:
             // Both documents have been loaded. Compare the renderings and see
             // if the comparison result matches the expected result specified
             // in the manifest.
             // number of different pixels
             var differences;
             // whether the two renderings match:
             var equal;
             var maxDifference = {};
             differences = gWindowUtils.compareCanvases(gCanvas1, gCanvas2, maxDifference);
             equal = (differences == 0);
             // what is expected on this platform (PASS, FAIL, or RANDOM)
             var expected = gURLs[0].expected;
             if (maxDifference.value > 0 && maxDifference.value <= gURLs[0].fuzzyMaxDelta &&
                 differences <= gURLs[0].fuzzyMaxPixels) {
                 if (equal) {
                     throw "Inconsistent result from compareCanvases.";
                 }
                 equal = expected == EXPECTED_FUZZY;
                 gDumpLog("REFTEST fuzzy match\n");
             }
             // whether the comparison result matches what is in the manifest
             var test_passed = (equal == (gURLs[0].type == TYPE_REFTEST_EQUAL)) && !gFailedNoPaint;
             output = outputs[expected][test_passed];
             ++gTestResults[output.n];
             // It's possible that we failed both reftest-no-paint and the normal comparison, but we don't
             // have a way to annotate these separately, so just print an error for the no-paint failure.
             if (gFailedNoPaint) {
                 if (expected == EXPECTED_FAIL) {
                     gDumpLog("REFTEST TEST-KNOWN-FAIL | " + gURLs[0].prettyPath + " | failed reftest-no-paint\n");
                 } else {
                     gDumpLog("REFTEST TEST-UNEXPECTED-FAIL | " + gURLs[0].prettyPath + " | failed reftest-no-paint\n");
                 }
             } else {
                 var result = "REFTEST " + output.s + " | " +
                              gURLs[0].prettyPath + " | "; // the URL being tested
                 switch (gURLs[0].type) {
                     case TYPE_REFTEST_NOTEQUAL:
                         result += "image comparison (!=)";
                         break;
                     case TYPE_REFTEST_EQUAL:
                         result += "image comparison (==)";
                         break;
                 }
                 if (!test_passed && expected == EXPECTED_PASS ||
                     !test_passed && expected == EXPECTED_FUZZY ||
                     test_passed && expected == EXPECTED_FAIL) {
                     if (!equal) {
                         result += ", max difference: " + maxDifference.value + ", number of differing pixels: " + differences + "\n";
                         result += "REFTEST   IMAGE 1 (TEST): " + gCanvas1.toDataURL() + "\n";
                         result += "REFTEST   IMAGE 2 (REFERENCE): " + gCanvas2.toDataURL() + "\n";
                     } else {
                         result += "\n";
                         result += "REFTEST   IMAGE: " + gCanvas1.toDataURL() + "\n";
                     }
                 } else {
                     result += "\n";
                 }
                 gDumpLog(result);
             }
             if (!test_passed && expected == EXPECTED_PASS) {
                 FlushTestLog();
             }
             if (gURLs[0].prefSettings1.length == 0) {
                 UpdateCanvasCache(gURLs[0].url1, gCanvas1);
             }
             if (gURLs[0].prefSettings2.length == 0) {
                 UpdateCanvasCache(gURLs[0].url2, gCanvas2);
             }
             CleanUpCrashDumpFiles();
             FinishTestItem();
             break;
         default:
             throw "Unexpected state.";
     }
 }
 function LoadFailed(why)
 {
     ++gTestResults.FailedLoad;
     // Once bug 896840 is fixed, this can go away, but for now it will give log
     // output that is TBPL starable for bug 789751 and bug 720452.
     if (!why) {
         gDumpLog("REFTEST TEST-UNEXPECTED-FAIL | load failed with unknown reason\n");
     }
     gDumpLog("REFTEST TEST-UNEXPECTED-FAIL | " +
          gURLs[0]["url" + gState].spec + " | load failed: " + why + "\n");
     FlushTestLog();
     FinishTestItem();
 }
 function RemoveExpectedCrashDumpFiles()
 {
     if (gExpectingProcessCrash) {
         for each (let crashFilename in gExpectedCrashDumpFiles) {
             let file = gCrashDumpDir.clone();
             file.append(crashFilename);
             if (file.exists()) {
                 file.remove(false);
             }
         }
     }
     gExpectedCrashDumpFiles.length = 0;
 }
 function FindUnexpectedCrashDumpFiles()
 {
     if (!gCrashDumpDir.exists()) {
         return;
     }
     let entries = gCrashDumpDir.directoryEntries;
     if (!entries) {
         return;
     }
     let foundCrashDumpFile = false;
     while (entries.hasMoreElements()) {
         let file = entries.getNext().QueryInterface(CI.nsIFile);
         let path = String(file.path);
         if (path.match(/\.(dmp|extra)$/) && !gUnexpectedCrashDumpFiles[path]) {
             if (!foundCrashDumpFile) {
                 ++gTestResults.UnexpectedFail;
                 foundCrashDumpFile = true;
                 gDumpLog("REFTEST TEST-UNEXPECTED-FAIL | " + gCurrentURL +
                          " | This test left crash dumps behind, but we weren't expecting it to!\n");
             }
             gDumpLog("REFTEST INFO | Found unexpected crash dump file " + path +
                      ".\n");
             gUnexpectedCrashDumpFiles[path] = true;
         }
     }
 }
 function CleanUpCrashDumpFiles()
 {
     RemoveExpectedCrashDumpFiles();
     FindUnexpectedCrashDumpFiles();
     gExpectingProcessCrash = false;
 }
 function FinishTestItem()
 {
     // Replace document with BLANK_URL_FOR_CLEARING in case there are
     // assertions when unloading.
     gDumpLog("REFTEST INFO | Loading a blank page\n");
     // After clearing, content will notify us of the assertion count
     // and tests will continue.
     SetAsyncScroll(false);
     SendClear();
     gFailedNoPaint = false;
 }
 function DoAssertionCheck(numAsserts)
 {
     if (gDebug.isDebugBuild) {
         if (gBrowserIsRemote) {
             // Count chrome-process asserts too when content is out of
             // process.
             var newAssertionCount = gDebug.assertionCount;
             var numLocalAsserts = newAssertionCount - gAssertionCount;
             gAssertionCount = newAssertionCount;
             numAsserts += numLocalAsserts;
         }
         var minAsserts = gURLs[0].minAsserts;
         var maxAsserts = gURLs[0].maxAsserts;
         var expectedAssertions = "expected " + minAsserts;
         if (minAsserts != maxAsserts) {
             expectedAssertions += " to " + maxAsserts;
         }
         expectedAssertions += " assertions";
         if (numAsserts < minAsserts) {
             ++gTestResults.AssertionUnexpectedFixed;
             gDumpLog("REFTEST TEST-UNEXPECTED-PASS | " + gURLs[0].prettyPath +
                  " | assertion count " + numAsserts + " is less than " +
                  expectedAssertions + "\n");
         } else if (numAsserts > maxAsserts) {
             ++gTestResults.AssertionUnexpected;
             gDumpLog("REFTEST TEST-UNEXPECTED-FAIL | " + gURLs[0].prettyPath +
                  " | assertion count " + numAsserts + " is more than " +
                  expectedAssertions + "\n");
         } else if (numAsserts != 0) {
             ++gTestResults.AssertionKnown;
             gDumpLog("REFTEST TEST-KNOWN-FAIL | " + gURLs[0].prettyPath +
                  " | assertion count " + numAsserts + " matches " +
                  expectedAssertions + "\n");
         }
     }
     gDumpLog("REFTEST TEST-END | " + gURLs[0].prettyPath + "\n");
     // And start the next test.
     gURLs.shift();
     StartCurrentTest();
 }
 function ResetRenderingState()
 {
     SendResetRenderingState();
     // We would want to clear any viewconfig here, if we add support for it
 }
 function RestoreChangedPreferences()
 {
     if (gPrefsToRestore.length > 0) {
         var prefs = Components.classes["@mozilla.org/preferences-service;1"].
                     getService(Components.interfaces.nsIPrefBranch);
         gPrefsToRestore.reverse();
         gPrefsToRestore.forEach(function(ps) {
             var value = ps.value;
             if (ps.type == PREF_BOOLEAN) {
                 prefs.setBoolPref(ps.name, value);
             } else if (ps.type == PREF_STRING) {
                 prefs.setCharPref(ps.name, value);
                 value = '"' + value + '"';
             } else if (ps.type == PREF_INTEGER) {
                 prefs.setIntPref(ps.name, value);
             }
             gDumpLog("RESTORE PREFERENCE pref(" + ps.name + "," + value + ")\n");
         });
         gPrefsToRestore = [];
     }
 }
 function RegisterMessageListenersAndLoadContentScript()
 {
     gBrowserMessageManager.addMessageListener(
         "reftest:AssertionCount",
         function (m) { RecvAssertionCount(m.json.count); }
     );
     gBrowserMessageManager.addMessageListener(
         "reftest:ContentReady",
         function (m) { return RecvContentReady() }
     );
     gBrowserMessageManager.addMessageListener(
         "reftest:Exception",
         function (m) { RecvException(m.json.what) }
     );
     gBrowserMessageManager.addMessageListener(
         "reftest:FailedLoad",
         function (m) { RecvFailedLoad(m.json.why); }
     );
     gBrowserMessageManager.addMessageListener(
         "reftest:FailedNoPaint",
         function (m) { RecvFailedNoPaint(); }
     );
     gBrowserMessageManager.addMessageListener(
         "reftest:InitCanvasWithSnapshot",
         function (m) { return RecvInitCanvasWithSnapshot(); }
     );
     gBrowserMessageManager.addMessageListener(
         "reftest:Log",
         function (m) { RecvLog(m.json.type, m.json.msg); }
     );
     gBrowserMessageManager.addMessageListener(
         "reftest:ScriptResults",
         function (m) { RecvScriptResults(m.json.runtimeMs, m.json.error, m.json.results); }
     );
     gBrowserMessageManager.addMessageListener(
         "reftest:TestDone",
         function (m) { RecvTestDone(m.json.runtimeMs); }
     );
     gBrowserMessageManager.addMessageListener(
         "reftest:UpdateCanvasForInvalidation",
         function (m) { RecvUpdateCanvasForInvalidation(m.json.rects); }
     );
     gBrowserMessageManager.addMessageListener(
         "reftest:UpdateWholeCanvasForInvalidation",
         function (m) { RecvUpdateWholeCanvasForInvalidation(); }
     );
     gBrowserMessageManager.addMessageListener(
         "reftest:ExpectProcessCrash",
         function (m) { RecvExpectProcessCrash(); }
     );
     gBrowserMessageManager.addMessageListener(
         "reftest:EnableAsyncScroll",
         function (m) { SetAsyncScroll(true); }
     );
     gBrowserMessageManager.loadFrameScript("chrome://reftest/content/reftest-content.js", true, true);
 }
 function SetAsyncScroll(enabled)
 {
     gBrowser.QueryInterface(CI.nsIFrameLoaderOwner).frameLoader.renderMode =
         enabled ? CI.nsIFrameLoader.RENDER_MODE_ASYNC_SCROLL :
                   CI.nsIFrameLoader.RENDER_MODE_DEFAULT;
 }
 function RecvAssertionCount(count)
 {
     DoAssertionCheck(count);
 }
 function RecvContentReady()
 {
     InitAndStartRefTests();
     return { remote: gBrowserIsRemote };
 }
 function RecvException(what)
 {
     gDumpLog("REFTEST TEST-UNEXPECTED-FAIL | " + gCurrentURL + " | " + what + "\n");
     ++gTestResults.Exception;
 }
 function RecvFailedLoad(why)
 {
     LoadFailed(why);
 }
 function RecvFailedNoPaint()
 {
     gFailedNoPaint = true;
 }
 function RecvInitCanvasWithSnapshot()
 {
     var painted = InitCurrentCanvasWithSnapshot();
     return { painted: painted };
 }
 function RecvLog(type, msg)
 {
     msg = "[CONTENT] "+ msg;
     if (type == "info") {
         LogInfo(msg);
     } else if (type == "warning") {
         LogWarning(msg);
     } else {
         gDumpLog("REFTEST TEST-UNEXPECTED-FAIL | " + gCurrentURL + " | unknown log type " + type + "\n");
         ++gTestResults.Exception;
     }
 }
 function RecvScriptResults(runtimeMs, error, results)
 {
     RecordResult(runtimeMs, error, results);
 }
 function RecvTestDone(runtimeMs)
 {
     RecordResult(runtimeMs, '', [ ]);
 }
 function RecvUpdateCanvasForInvalidation(rects)
 {
     UpdateCurrentCanvasForInvalidation(rects);
 }
 function RecvUpdateWholeCanvasForInvalidation()
 {
     UpdateWholeCurrentCanvasForInvalidation();
 }
 function OnProcessCrashed(subject, topic, data)
 {
     var id;
     subject = subject.QueryInterface(CI.nsIPropertyBag2);
     if (topic == "plugin-crashed") {
         id = subject.getPropertyAsAString("pluginDumpID");
     } else if (topic == "ipc:content-shutdown") {
         id = subject.getPropertyAsAString("dumpID");
     }
     if (id) {
         gExpectedCrashDumpFiles.push(id + ".dmp");
         gExpectedCrashDumpFiles.push(id + ".extra");
     }
 }
 function RegisterProcessCrashObservers()
 {
     var os = CC[NS_OBSERVER_SERVICE_CONTRACTID]
              .getService(CI.nsIObserverService);
     os.addObserver(OnProcessCrashed, "plugin-crashed", false);
     os.addObserver(OnProcessCrashed, "ipc:content-shutdown", false);
 }
 function RecvExpectProcessCrash()
 {
     gExpectingProcessCrash = true;
 }
 function SendClear()
 {
     gBrowserMessageManager.sendAsyncMessage("reftest:Clear");
 }
 function SendLoadScriptTest(uri, timeout)
 {
     gBrowserMessageManager.sendAsyncMessage("reftest:LoadScriptTest",
                                             { uri: uri, timeout: timeout });
 }
 function SendLoadTest(type, uri, timeout)
 {
     gBrowserMessageManager.sendAsyncMessage("reftest:LoadTest",
                                             { type: type, uri: uri, timeout: timeout }
     );
 }
 function SendResetRenderingState()
 {
     gBrowserMessageManager.sendAsyncMessage("reftest:ResetRenderingState");
 }