Add EXTERNAL_POLICY to list of possible extension locations

chrome/browser/background/background_contents_service.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/background/background_contents_service.h"
 
 #include "apps/app_load_service.h"
 #include "base/basictypes.h"
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 391 matching lines @@
           extensions::ExtensionSystem::Get(profile)->extension_service()->
               GetExtensionById(extension_id, false);
       } else {
         extensions::ExtensionHost* extension_host =
             content::Details<extensions::ExtensionHost>(details).ptr();
         extension = extension_host->extension();
       }
       if (!extension)
         break;
 
-      const bool force_installed = extension->location() ==
-          extensions::Manifest::EXTERNAL_POLICY_DOWNLOAD;
+      const bool force_installed =
+          extensions::Manifest::IsPolicyLocation(extension->location());
       if (!force_installed) {
         // When an extension crashes, EXTENSION_PROCESS_TERMINATED is followed
         // by an EXTENSION_UNLOADED notification. This UNLOADED signal causes
         // all the notifications for this extension to be cancelled by
         // DesktopNotificationService. For this reason, we post the crash
         // handling code as a task here so that it is not executed before this
         // event.
         base::MessageLoop::current()->PostTask(
             FROM_HERE, base::Bind(&ShowBalloon, extension, profile));
       } else {
@@ skipping 319 matching lines @@
     bool user_gesture,
     bool* was_blocked) {
   Browser* browser = chrome::FindLastActiveWithProfile(
       Profile::FromBrowserContext(new_contents->GetBrowserContext()),
       chrome::GetActiveDesktop());
   if (browser) {
     chrome::AddWebContents(browser, NULL, new_contents, disposition,
                            initial_pos, user_gesture, was_blocked);
   }
 }