content: convert zoom notifications to observer usage

chrome/browser/profiles/profile_impl.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.
 
 // This class gathers state related to a single user profile.
 
 #ifndef CHROME_BROWSER_PROFILES_PROFILE_IMPL_H_
 #define CHROME_BROWSER_PROFILES_PROFILE_IMPL_H_
 
 #include <string>
 
 #include "base/file_path.h"
 #include "base/gtest_prod_util.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/prefs/public/pref_change_registrar.h"
 #include "base/timer.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_impl_io_data.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
+#include "content/public/browser/host_zoom_map.h"
 
 class NetPrefObserver;
 class PrefServiceSyncable;
 class PrefServiceBase;
 class SSLConfigServiceManager;
 
 #if defined(OS_CHROMEOS)
 namespace chromeos {
 class EnterpriseExtensionObserver;
 class LocaleChangeGuard;
@@ skipping 120 matching lines @@
               Delegate* delegate,
               CreateMode create_mode,
               base::SequencedTaskRunner* sequenced_task_runner);
 
   // Does final initialization. Should be called after prefs were loaded.
   void DoFinalInit(bool is_new_profile);
 
   void InitHostZoomMap();
 
   void OnDefaultZoomLevelChanged();
+  void OnZoomLevelChanged(const std::string& host);
 
   void OnInitializationCompleted(PrefServiceBase* pref_service,
                                  bool succeeded);
 
   // Does final prefs initialization and calls Init().
   void OnPrefsLoaded(bool success);
 
   FilePath GetPrefFilePath();
 
 #if defined(ENABLE_SESSION_SERVICE)
@@ skipping 11 matching lines @@
 
   // Updates the ProfileInfoCache with data from this profile.
   void UpdateProfileNameCache();
   void UpdateProfileAvatarCache();
 
   void GetCacheParameters(bool is_media_context,
                           FilePath* cache_path,
                           int* max_size);
 
   content::NotificationRegistrar registrar_;
+  content::HostZoomMap::ZoomLevelChangedCallback zoom_callback_;
   PrefChangeRegistrar pref_change_registrar_;
 
   FilePath path_;
   FilePath base_cache_path_;
 
   // !!! BIG HONKING WARNING !!!
   //  The order of the members below is important. Do not change it unless
   //  you know what you're doing. Also, if adding a new member here make sure
   //  that the declaration occurs AFTER things it depends on as destruction
   //  happens in reverse order of declaration.
@@ skipping 64 matching lines @@
   //   chrome/browser/profile/profile_keyed_dependency_manager.{h,cc}
 
   Profile::Delegate* delegate_;
 
   chrome_browser_net::Predictor* predictor_;
 
   DISALLOW_COPY_AND_ASSIGN(ProfileImpl);
 };
 
 #endif  // CHROME_BROWSER_PROFILES_PROFILE_IMPL_H_