Replace FOR_EACH_OBSERVER in components/drive with range-based for

components/drive/drive_notification_manager.cc

 // Copyright 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 "components/drive/drive_notification_manager.h"
 
 #include "base/metrics/histogram.h"
 #include "components/drive/drive_notification_observer.h"
 #include "components/invalidation/public/invalidation_service.h"
 #include "components/invalidation/public/object_id_invalidation_map.h"
@@ skipping 43 matching lines @@
 }
 
 void DriveNotificationManager::OnInvalidatorStateChange(
     syncer::InvalidatorState state) {
   push_notification_enabled_ = (state == syncer::INVALIDATIONS_ENABLED);
   if (push_notification_enabled_) {
     DVLOG(1) << "XMPP Notifications enabled";
   } else {
     DVLOG(1) << "XMPP Notifications disabled (state=" << state << ")";
   }
-  FOR_EACH_OBSERVER(DriveNotificationObserver, observers_,
-                    OnPushNotificationEnabled(push_notification_enabled_));
+  for (auto& observer : observers_)
+    observer.OnPushNotificationEnabled(push_notification_enabled_);
 }
 
 void DriveNotificationManager::OnIncomingInvalidation(
     const syncer::ObjectIdInvalidationMap& invalidation_map) {
   DVLOG(2) << "XMPP Drive Notification Received";
   syncer::ObjectIdSet ids = invalidation_map.GetObjectIds();
   DCHECK_EQ(1U, ids.size());
   const invalidation::ObjectId object_id(
       ipc::invalidation::ObjectSource::COSMO_CHANGELOG,
       kDriveInvalidationObjectId);
@@ skipping 27 matching lines @@
       FROM_HERE,
       base::TimeDelta::FromSeconds(interval_secs),
       base::Bind(&DriveNotificationManager::NotifyObserversToUpdate,
                  weak_ptr_factory_.GetWeakPtr(),
                  NOTIFICATION_POLLING));
 }
 
 void DriveNotificationManager::NotifyObserversToUpdate(
     NotificationSource source) {
   DVLOG(1) << "Notifying observers: " << NotificationSourceToString(source);
-  FOR_EACH_OBSERVER(DriveNotificationObserver, observers_,
-                    OnNotificationReceived());
+  for (auto& observer : observers_)
+    observer.OnNotificationReceived();
   if (!observers_notified_) {
     UMA_HISTOGRAM_BOOLEAN("Drive.PushNotificationInitiallyEnabled",
                           push_notification_enabled_);
   }
   observers_notified_ = true;
 
   // Note that polling_timer_ is not a repeating timer. Restarting manually
   // here is better as XMPP may be received right before the polling timer is
   // fired (i.e. we don't notify observers twice in a row).
   RestartPollingTimer();
@@ skipping 26 matching lines @@
       return "NOTIFICATION_XMPP";
     case NOTIFICATION_POLLING:
       return "NOTIFICATION_POLLING";
   }
 
   NOTREACHED();
   return "";
 }
 
 }  // namespace drive