Add EXTERNAL_POLICY to list of possible extension locations

chrome/browser/extensions/extension_service.cc

 // Copyright (c) 2013 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/extensions/extension_service.h"
 
 #include <algorithm>
 #include <iterator>
 #include <set>
 
@@ skipping 2475 matching lines @@
         extension, "Extensions.Permissions_Install");
   } else {
     UMA_HISTOGRAM_ENUMERATION("Extensions.UpdateType",
                               extension->GetType(), 100);
     UMA_HISTOGRAM_ENUMERATION("Extensions.UpdateSource",
                               extension->location(), Manifest::NUM_LOCATIONS);
   }
 
   // Certain extension locations are specific enough that we can
   // auto-acknowledge any extension that came from one of them.
-  if (extension->location() == Manifest::EXTERNAL_POLICY_DOWNLOAD)
+  if (Manifest::IsPolicyLocation(extension->location()))
     AcknowledgeExternalExtension(extension->id());
   const Extension::State initial_state =
       initial_enable ? Extension::ENABLED : Extension::DISABLED;
   if (ShouldDelayExtensionUpdate(id, wait_for_idle)) {
     extension_prefs_->SetDelayedInstallInfo(
         extension,
         initial_state,
         blacklist_state,
         extensions::ExtensionPrefs::DELAY_REASON_WAIT_FOR_IDLE,
         page_ordinal);
@@ skipping 654 matching lines @@
 }
 
 void ExtensionService::AddUpdateObserver(extensions::UpdateObserver* observer) {
   update_observers_.AddObserver(observer);
 }
 
 void ExtensionService::RemoveUpdateObserver(
     extensions::UpdateObserver* observer) {
   update_observers_.RemoveObserver(observer);
 }