diff -r 000000000000 -r 6474c204b198 toolkit/devtools/gcli/commands/jsb.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/toolkit/devtools/gcli/commands/jsb.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,133 @@
+/* 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/. */
+
+"use strict";
+
+const { Cc, Ci, Cu } = require("chrome");
+const gcli = require("gcli/index");
+const XMLHttpRequest = Cc["@mozilla.org/xmlextras/xmlhttprequest;1"];
+
+loader.lazyImporter(this, "js_beautify", "resource:///modules/devtools/Jsbeautify.jsm");
+
+exports.items = [
+  {
+    name: "jsb",
+    description: gcli.lookup("jsbDesc"),
+    returnValue:"string",
+    params: [
+      {
+        name: "url",
+        type: "string",
+        description: gcli.lookup("jsbUrlDesc")
+      },
+      {
+        group: gcli.lookup("jsbOptionsDesc"),
+        params: [
+          {
+            name: "indentSize",
+            type: "number",
+            description: gcli.lookup("jsbIndentSizeDesc"),
+            manual: gcli.lookup("jsbIndentSizeManual"),
+            defaultValue: 2
+          },
+          {
+            name: "indentChar",
+            type: {
+              name: "selection",
+              lookup: [
+                { name: "space", value: " " },
+                { name: "tab", value: "\t" }
+              ]
+            },
+            description: gcli.lookup("jsbIndentCharDesc"),
+            manual: gcli.lookup("jsbIndentCharManual"),
+            defaultValue: " ",
+          },
+          {
+            name: "doNotPreserveNewlines",
+            type: "boolean",
+            description: gcli.lookup("jsbDoNotPreserveNewlinesDesc")
+          },
+          {
+            name: "preserveMaxNewlines",
+            type: "number",
+            description: gcli.lookup("jsbPreserveMaxNewlinesDesc"),
+            manual: gcli.lookup("jsbPreserveMaxNewlinesManual"),
+            defaultValue: -1
+          },
+          {
+            name: "jslintHappy",
+            type: "boolean",
+            description: gcli.lookup("jsbJslintHappyDesc"),
+            manual: gcli.lookup("jsbJslintHappyManual")
+          },
+          {
+            name: "braceStyle",
+            type: {
+              name: "selection",
+              data: ["collapse", "expand", "end-expand", "expand-strict"]
+            },
+            description: gcli.lookup("jsbBraceStyleDesc2"),
+            manual: gcli.lookup("jsbBraceStyleManual2"),
+            defaultValue: "collapse"
+          },
+          {
+            name: "noSpaceBeforeConditional",
+            type: "boolean",
+            description: gcli.lookup("jsbNoSpaceBeforeConditionalDesc")
+          },
+          {
+            name: "unescapeStrings",
+            type: "boolean",
+            description: gcli.lookup("jsbUnescapeStringsDesc"),
+            manual: gcli.lookup("jsbUnescapeStringsManual")
+          }
+        ]
+      }
+    ],
+    exec: function(args, context) {
+      let opts = {
+        indent_size: args.indentSize,
+        indent_char: args.indentChar,
+        preserve_newlines: !args.doNotPreserveNewlines,
+        max_preserve_newlines: args.preserveMaxNewlines == -1 ?
+                              undefined : args.preserveMaxNewlines,
+        jslint_happy: args.jslintHappy,
+        brace_style: args.braceStyle,
+        space_before_conditional: !args.noSpaceBeforeConditional,
+        unescape_strings: args.unescapeStrings
+      };
+
+      let xhr = new XMLHttpRequest();
+
+      try {
+        xhr.open("GET", args.url, true);
+      } catch(e) {
+        return gcli.lookup("jsbInvalidURL");
+      }
+
+      let deferred = context.defer();
+
+      xhr.onreadystatechange = function(aEvt) {
+        if (xhr.readyState == 4) {
+          if (xhr.status == 200 || xhr.status == 0) {
+            let browserDoc = context.environment.chromeDocument;
+            let browserWindow = browserDoc.defaultView;
+            let gBrowser = browserWindow.gBrowser;
+            let result = js_beautify(xhr.responseText, opts);
+
+            browserWindow.Scratchpad.ScratchpadManager.openScratchpad({text: result});
+
+            deferred.resolve();
+          } else {
+            deferred.resolve("Unable to load page to beautify: " + args.url + " " +
+                             xhr.status + " " + xhr.statusText);
+          }
+        };
+      }
+      xhr.send(null);
+      return deferred.promise;
+    }
+  }
+];