Replace FOR_EACH_OBSERVER in components/drive with range-based for

components/drive/job_scheduler.cc

 // 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.
 
 #include "components/drive/job_scheduler.h"
 
 #include <stddef.h>
 #include <algorithm>
 #include <utility>
 
@@ skipping 1142 matching lines @@
       job->abort_callback;
   queue_[GetJobQueueType(job->job_info.job_type)]->Remove(job->job_info.job_id);
   NotifyJobDone(job->job_info, error);
   job_map_.Remove(job->job_info.job_id);
   base::ThreadTaskRunnerHandle::Get()->PostTask(FROM_HERE,
                                                 base::Bind(callback, error));
 }
 
 void JobScheduler::NotifyJobAdded(const JobInfo& job_info) {
   DCHECK(thread_checker_.CalledOnValidThread());
-  FOR_EACH_OBSERVER(JobListObserver, observer_list_, OnJobAdded(job_info));
+  for (auto& observer : observer_list_)
+    observer.OnJobAdded(job_info);
 }
 
 void JobScheduler::NotifyJobDone(const JobInfo& job_info,
                                  google_apis::DriveApiErrorCode error) {
   DCHECK(thread_checker_.CalledOnValidThread());
-  FOR_EACH_OBSERVER(JobListObserver, observer_list_,
-                    OnJobDone(job_info, GDataToFileError(error)));
+  for (auto& observer : observer_list_)
+    observer.OnJobDone(job_info, GDataToFileError(error));
 }
 
 void JobScheduler::NotifyJobUpdated(const JobInfo& job_info) {
   DCHECK(thread_checker_.CalledOnValidThread());
-  FOR_EACH_OBSERVER(JobListObserver, observer_list_, OnJobUpdated(job_info));
+  for (auto& observer : observer_list_)
+    observer.OnJobUpdated(job_info);
 }
 
 std::string JobScheduler::GetQueueInfo(QueueType type) const {
   return QueueTypeToString(type) + " " + queue_[type]->ToString();
 }
 
 // static
 std::string JobScheduler::QueueTypeToString(QueueType type) {
   switch (type) {
     case METADATA_QUEUE:
       return "METADATA_QUEUE";
     case FILE_QUEUE:
       return "FILE_QUEUE";
     case NUM_QUEUES:
       break;  // This value is just a sentinel. Should never be used.
   }
   NOTREACHED();
   return "";
 }
 
 }  // namespace drive