Bug 1011978 - fix use of updater service in nsBrowserGlue to check for MOZ_UPDATER,r=jaws

--HG--
extra : commitid : 8QZoPQSBZLl
extra : rebase_source : 58c8b4b2834c91598b1f0fd4164de4dd743c8170
extra : amend_source : 56e76aa515a7be89d06ad4f1b8061ebc772a3ed1

browser/components/nsBrowserGlue.js

@@ -172,6 +172,9 @@ XPCOMUtils.defineLazyModuleGetter(this, "LightweightThemeManager",
 XPCOMUtils.defineLazyModuleGetter(this, "ExtensionManagement",
                                   "resource://gre/modules/ExtensionManagement.jsm");
 
+XPCOMUtils.defineLazyModuleGetter(this, "AppConstants",
+                                  "resource://gre/modules/AppConstants.jsm");
+
 const PREF_PLUGINS_NOTIFYUSER = "plugins.update.notifyUser";
 const PREF_PLUGINS_UPDATEURL  = "plugins.update.url";
 
@@ -821,7 +824,8 @@ BrowserGlue.prototype = {
 
   _checkForOldBuildUpdates: function () {
     // check for update if our build is old
-    if (Services.prefs.getBoolPref("app.update.enabled") &&
+    if (AppConstants.MOZ_UPDATER &&
+        Services.prefs.getBoolPref("app.update.enabled") &&
         Services.prefs.getBoolPref("app.update.checkInstallTime")) {
 
       let buildID = Services.appinfo.appBuildID;