The Tor Browser / file revision

 // enable crash reporting first

 let cwd = Components.classes["@mozilla.org/file/directory_service;1"]

       .getService(Components.interfaces.nsIProperties)

       .get("CurWorkD", Components.interfaces.nsILocalFile);

 // get the temp dir

 let env = Components.classes["@mozilla.org/process/environment;1"].getService(Components.interfaces.nsIEnvironment);

 let _tmpd = Components.classes["@mozilla.org/file/local;1"].createInstance(Components.interfaces.nsILocalFile);

 _tmpd.initWithPath(env.get("XPCSHELL_TEST_TEMP_DIR"));

 let crashReporter =

   Components.classes["@mozilla.org/toolkit/crash-reporter;1"]

     .getService(Components.interfaces.nsICrashReporter);

 // We need to call this or crash events go in an undefined location.

 crashReporter.UpdateCrashEventsDir();

 // Setting the minidump path is not allowed in content processes

 let processType = Components.classes["@mozilla.org/xre/runtime;1"].

       getService(Components.interfaces.nsIXULRuntime).processType;

 if (processType == Components.interfaces.nsIXULRuntime.PROCESS_TYPE_DEFAULT) {

   crashReporter.minidumpPath = _tmpd;

 }

 let ios = Components.classes["@mozilla.org/network/io-service;1"]

             .getService(Components.interfaces.nsIIOService);

 let protocolHandler = ios.getProtocolHandler("resource")

                         .QueryInterface(Components.interfaces.nsIResProtocolHandler);

 let curDirURI = ios.newFileURI(cwd);

 protocolHandler.setSubstitution("test", curDirURI);

 Components.utils.import("resource://test/CrashTestUtils.jsm");

 let crashType = CrashTestUtils.CRASH_INVALID_POINTER_DEREF;