Add new extension APIs related to animation policy.

chrome/browser/extensions/api/preference/preference_api.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_API_PREFERENCE_PREFERENCE_API_H__
 #define CHROME_BROWSER_EXTENSIONS_API_PREFERENCE_PREFERENCE_API_H__
 
 #include <string>
 
 #include "base/memory/ref_counted.h"
@@ skipping 92 matching lines @@
 
   // BrowserContextKeyedAPI implementation.
   static BrowserContextKeyedAPIFactory<PreferenceAPI>* GetFactoryInstance();
 
   // Convenience method to get the PreferenceAPI for a profile.
   static PreferenceAPI* Get(content::BrowserContext* context);
 
   // EventRouter::Observer implementation.
   void OnListenerAdded(const EventListenerInfo& details) override;
 
+  void UpdateAnimationPolicy();
+
  private:
   friend class BrowserContextKeyedAPIFactory<PreferenceAPI>;
 
   // ContentSettingsStore::Observer implementation.
   void OnContentSettingChanged(const std::string& extension_id,
                                bool incognito) override;
 
   // Clears incognito session-only content settings for all extensions.
   void ClearIncognitoSessionOnlyContentSettings();
 
   // PreferenceAPIBase implementation.
   ExtensionPrefs* extension_prefs() override;
   ExtensionPrefValueMap* extension_pref_value_map() override;
   scoped_refptr<ContentSettingsStore> content_settings_store() override;
 
   Profile* profile_;
+  PrefChangeRegistrar pref_change_registrar_;
 
   // BrowserContextKeyedAPI implementation.
   static const char* service_name() {
     return "PreferenceAPI";
   }
   static const bool kServiceIsNULLWhileTesting = true;
   static const bool kServiceRedirectedInIncognito = true;
 
   // Created lazily upon OnListenerAdded.
   scoped_ptr<PreferenceEventRouter> preference_event_router_;
@@ skipping 72 matching lines @@
  protected:
   ~ClearPreferenceFunction() override;
 
   // ExtensionFunction:
   bool RunSync() override;
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_PREFERENCE_PREFERENCE_API_H__