diff -r 000000000000 -r 6474c204b198 toolkit/modules/RemoteWebNavigation.jsm
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/toolkit/modules/RemoteWebNavigation.jsm	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,111 @@
+// -*- Mode: javascript; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+// 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/.
+
+this.EXPORTED_SYMBOLS = ["RemoteWebNavigation"];
+
+const Ci = Components.interfaces;
+const Cc = Components.classes;
+const Cu = Components.utils;
+
+Cu.import("resource://gre/modules/XPCOMUtils.jsm");
+
+function makeURI(url)
+{
+  return Cc["@mozilla.org/network/io-service;1"].
+         getService(Ci.nsIIOService).
+         newURI(url, null, null);
+}
+
+function RemoteWebNavigation(browser)
+{
+  this._browser = browser;
+  this._browser.messageManager.addMessageListener("WebNavigation:setHistory", this);
+}
+
+RemoteWebNavigation.prototype = {
+  QueryInterface: XPCOMUtils.generateQI([Ci.nsIWebNavigation, Ci.nsISupports]),
+
+  LOAD_FLAGS_MASK: 65535,
+  LOAD_FLAGS_NONE: 0,
+  LOAD_FLAGS_IS_REFRESH: 16,
+  LOAD_FLAGS_IS_LINK: 32,
+  LOAD_FLAGS_BYPASS_HISTORY: 64,
+  LOAD_FLAGS_REPLACE_HISTORY: 128,
+  LOAD_FLAGS_BYPASS_CACHE: 256,
+  LOAD_FLAGS_BYPASS_PROXY: 512,
+  LOAD_FLAGS_CHARSET_CHANGE: 1024,
+  LOAD_FLAGS_STOP_CONTENT: 2048,
+  LOAD_FLAGS_FROM_EXTERNAL: 4096,
+  LOAD_FLAGS_ALLOW_THIRD_PARTY_FIXUP: 8192,
+  LOAD_FLAGS_FIRST_LOAD: 16384,
+  LOAD_FLAGS_ALLOW_POPUPS: 32768,
+  LOAD_FLAGS_BYPASS_CLASSIFIER: 65536,
+  LOAD_FLAGS_FORCE_ALLOW_COOKIES: 131072,
+
+  STOP_NETWORK: 1,
+  STOP_CONTENT: 2,
+  STOP_ALL: 3,
+
+  canGoBack: false,
+  canGoForward: false,
+  goBack: function() {
+    this._sendMessage("WebNavigation:GoBack", {});
+  },
+  goForward: function() {
+    this._sendMessage("WebNavigation:GoForward", {});
+  },
+  gotoIndex: function(aIndex) {
+    this._sendMessage("WebNavigation:GotoIndex", {index: aIndex});
+  },
+  loadURI: function(aURI, aLoadFlags, aReferrer, aPostData, aHeaders) {
+    this._browser._contentTitle = "";
+    this._sendMessage("WebNavigation:LoadURI", {uri: aURI, flags: aLoadFlags});
+  },
+  reload: function(aReloadFlags) {
+    this._sendMessage("WebNavigation:Reload", {flags: aReloadFlags});
+  },
+  stop: function(aStopFlags) {
+    this._sendMessage("WebNavigation:Stop", {flags: aStopFlags});
+  },
+
+  get document() {
+    return this._browser.contentDocument;
+  },
+
+  _currentURI: null,
+  get currentURI() {
+    if (!this._currentURI) {
+      this._currentURI = makeURI("about:blank");
+    }
+
+    return this._currentURI;
+  },
+  set currentURI(aURI) {
+    this.loadURI(aURI.spec, null, null, null);
+  },
+
+  referringURI: null,
+
+  _sessionHistory: null,
+  get sessionHistory() { return this._sessionHistory; },
+  set sessionHistory(aValue) { },
+
+  _sendMessage: function(aMessage, aData) {
+    try {
+      this._browser.messageManager.sendAsyncMessage(aMessage, aData);
+    }
+    catch (e) {
+      Cu.reportError(e);
+    }
+  },
+
+  receiveMessage: function(aMessage) {
+    switch (aMessage.name) {
+      case "WebNavigation:setHistory":
+        this._sessionHistory = aMessage.objects.history;
+        break;
+    }
+  }
+};