diff -r 000000000000 -r 6474c204b198 mobile/android/components/AboutRedirector.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mobile/android/components/AboutRedirector.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,125 @@
+/* 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/. */
+const Cc = Components.classes;
+const Ci = Components.interfaces;
+
+Components.utils.import("resource://gre/modules/XPCOMUtils.jsm");
+
+let modules = {
+  // about:
+  "": {
+    uri: "chrome://browser/content/about.xhtml",
+    privileged: true
+  },
+
+  // about:fennec and about:firefox are aliases for about:,
+  // but hidden from about:about
+  fennec: {
+    uri: "chrome://browser/content/about.xhtml",
+    privileged: true,
+    hide: true
+  },
+  get firefox() this.fennec,
+
+  // about:blank has some bad loading behavior we can avoid, if we use an alias
+  empty: {
+    uri: "about:blank",
+    privileged: false,
+    hide: true
+  },
+
+  rights: {
+#ifdef MOZ_OFFICIAL_BRANDING
+    uri: "chrome://browser/content/aboutRights.xhtml",
+#else
+    uri: "chrome://global/content/aboutRights-unbranded.xhtml",
+#endif
+    privileged: false
+  },
+  blocked: {
+    uri: "chrome://browser/content/blockedSite.xhtml",
+    privileged: false,
+    hide: true
+  },
+  certerror: {
+    uri: "chrome://browser/content/aboutCertError.xhtml",
+    privileged: false,
+    hide: true
+  },
+  home: {
+    uri: "chrome://browser/content/aboutHome.xhtml",
+    privileged: false
+  },
+  apps: {
+    uri: "chrome://browser/content/aboutApps.xhtml",
+    privileged: true
+  },
+  downloads: {
+    uri: "chrome://browser/content/aboutDownloads.xhtml",
+    privileged: true
+  },
+  reader: {
+    uri: "chrome://browser/content/aboutReader.html",
+    privileged: false,
+    hide: true
+  },
+  feedback: {
+    uri: "chrome://browser/content/aboutFeedback.xhtml",
+    privileged: true
+  },
+  privatebrowsing: {
+    uri: "chrome://browser/content/aboutPrivateBrowsing.xhtml",
+    privileged: true
+  },
+#ifdef MOZ_SERVICES_HEALTHREPORT
+  healthreport: {
+    uri: "chrome://browser/content/aboutHealthReport.xhtml",
+    privileged: true
+  },
+#endif
+}
+
+function AboutRedirector() {}
+AboutRedirector.prototype = {
+  QueryInterface: XPCOMUtils.generateQI([Ci.nsIAboutModule]),
+  classID: Components.ID("{322ba47e-7047-4f71-aebf-cb7d69325cd9}"),
+
+  _getModuleInfo: function (aURI) {
+    let moduleName = aURI.path.replace(/[?#].*/, "").toLowerCase();
+    return modules[moduleName];
+  },
+
+  // nsIAboutModule
+  getURIFlags: function(aURI) {
+    let flags;
+    let moduleInfo = this._getModuleInfo(aURI);
+    if (moduleInfo.hide)
+      flags = Ci.nsIAboutModule.HIDE_FROM_ABOUTABOUT;
+
+    return flags | Ci.nsIAboutModule.ALLOW_SCRIPT;
+  },
+
+  newChannel: function(aURI) {
+    let moduleInfo = this._getModuleInfo(aURI);
+
+    var ios = Cc["@mozilla.org/network/io-service;1"].
+              getService(Ci.nsIIOService);
+
+    var channel = ios.newChannel(moduleInfo.uri, null, null);
+    
+    if (!moduleInfo.privileged) {
+      // Setting the owner to null means that we'll go through the normal
+      // path in GetChannelPrincipal and create a codebase principal based
+      // on the channel's originalURI
+      channel.owner = null;
+    }
+
+    channel.originalURI = aURI;
+
+    return channel;
+  }
+};
+
+const components = [AboutRedirector];
+this.NSGetFactory = XPCOMUtils.generateNSGetFactory(components);