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

chrome/browser/extensions/settings/managed_value_store_cache.h

 // 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.
 
 #ifndef CHROME_BROWSER_EXTENSIONS_SETTINGS_MANAGED_VALUE_STORE_CACHE_H_
 #define CHROME_BROWSER_EXTENSIONS_SETTINGS_MANAGED_VALUE_STORE_CACHE_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
+#include "base/memory/ref_counted.h"
+#include "chrome/browser/extensions/settings/settings_observer.h"
 #include "chrome/browser/extensions/settings/value_store_cache.h"
-
-namespace policy {
-class PolicyService;
-}  // namespace policy
+#include "chrome/browser/policy/policy_service.h"
 
 namespace extensions {
 
 // Runs the StorageCallback with a read-only ValueStore that pulls values from
 // the PolicyService for the given extension.
-class ManagedValueStoreCache : public ValueStoreCache {
+class ManagedValueStoreCache : public ValueStoreCache,
+                               public policy::PolicyService::Observer {
  public:
-  explicit ManagedValueStoreCache(policy::PolicyService* policy_service);
+  ManagedValueStoreCache(policy::PolicyService* policy_service,
+                         scoped_refptr<SettingsObserverList> observers);
   virtual ~ManagedValueStoreCache();
 
   // ValueStoreCache implementation:
 
+  virtual void ShutdownOnUI() OVERRIDE;
+
   virtual scoped_refptr<base::MessageLoopProxy> GetMessageLoop() const OVERRIDE;
 
   virtual void RunWithValueStoreForExtension(
       const StorageCallback& callback,
       scoped_refptr<const Extension> extension) OVERRIDE;
 
   virtual void DeleteStorageSoon(const std::string& extension_id) OVERRIDE;
 
+  // PolicyService::Observer implementation:
+
+  virtual void OnPolicyUpdated(policy::PolicyDomain domain,
+                               const std::string& component_id,
+                               const policy::PolicyMap& previous,
+                               const policy::PolicyMap& current) OVERRIDE;
+
  private:
   policy::PolicyService* policy_service_;
 
+  scoped_refptr<SettingsObserverList> observers_;
+
   DISALLOW_COPY_AND_ASSIGN(ManagedValueStoreCache);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_SETTINGS_MANAGED_VALUE_STORE_CACHE_H_