Trigger chrome.storage.onChanged events for policy updates on the 'managed' namespace.

chrome/browser/extensions/settings/settings_frontend.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/extensions/settings/settings_frontend.h"
 
 #include <limits>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 99 matching lines @@
   caches_[settings_namespace::SYNC] =
       new SyncOrLocalValueStoreCache(
           settings_namespace::SYNC,
           factory,
           sync_quota_limit_,
           observers_,
           profile_path);
 
 #if defined(ENABLE_CONFIGURATION_POLICY)
   caches_[settings_namespace::MANAGED] =
-      new ManagedValueStoreCache(profile->GetPolicyService());
+      new ManagedValueStoreCache(profile->GetPolicyService(), observers_);
 #endif
 }
 
 SettingsFrontend::~SettingsFrontend() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   observers_->RemoveObserver(profile_observer_.get());
   // Destroy each cache in its preferred thread. The delete task will execute
   // after any other task that might've been posted before.
   for (CacheMap::iterator it = caches_.begin(); it != caches_.end(); ++it) {
     ValueStoreCache* cache = it->second;
@@ skipping 69 matching lines @@
     settings_namespace::Namespace settings_namespace) {
   CacheMap::iterator it = caches_.find(settings_namespace);
   if (it != caches_.end()) {
     ValueStoreCache* cache = it->second;
     cache->GetMessageLoop()->DeleteSoon(FROM_HERE, cache);
     caches_.erase(it);
   }
 }
 
 }  // namespace extensions