Reduce usage of FOR_EACH_OBSERVER macro in chrome/browser

chrome/browser/notifications/message_center_settings_controller.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/notifications/message_center_settings_controller.h"
 
 #include <algorithm>
 #include <string>
 #include <utility>
 
@@ skipping 299 matching lines @@
   RebuildNotifierGroups(true);
 }
 void MessageCenterSettingsController::OnProfileAuthInfoChanged(
     const base::FilePath& profile_path) {
   RebuildNotifierGroups(true);
 }
 
 void MessageCenterSettingsController::OnIconImageUpdated(
     const message_center::NotifierId& id,
     const gfx::Image& image) {
-  FOR_EACH_OBSERVER(message_center::NotifierSettingsObserver, observers_,
-                    UpdateIconImage(id, image));
+  for (message_center::NotifierSettingsObserver& observer : observers_)
+    observer.UpdateIconImage(id, image);
 }
 
 void MessageCenterSettingsController::OnNotifierEnabledChanged(
     const message_center::NotifierId& id,
     bool enabled) {
-  FOR_EACH_OBSERVER(message_center::NotifierSettingsObserver, observers_,
-                    NotifierEnabledChanged(id, enabled));
+  for (message_center::NotifierSettingsObserver& observer : observers_)
+    observer.NotifierEnabledChanged(id, enabled);
 }
 
 void MessageCenterSettingsController::DispatchNotifierGroupChanged() {
-  FOR_EACH_OBSERVER(message_center::NotifierSettingsObserver, observers_,
-                    NotifierGroupChanged());
+  for (message_center::NotifierSettingsObserver& observer : observers_)
+    observer.NotifierGroupChanged();
 }
 
 #if defined(OS_CHROMEOS)
 void MessageCenterSettingsController::CreateNotifierGroupForGuestLogin() {
   // Already created.
   if (!notifier_groups_.empty())
     return;
 
   user_manager::UserManager* user_manager = user_manager::UserManager::Get();
   // |notifier_groups_| can be empty in login screen too.
@@ skipping 65 matching lines @@
         FROM_HERE,
         base::Bind(
             &MessageCenterSettingsController::CreateNotifierGroupForGuestLogin,
             weak_factory_.GetWeakPtr()));
   }
 #endif
 
   if (notify)
     DispatchNotifierGroupChanged();
 }