Replace FOR_EACH_OBSERVER in c/b/ui/app_list with range-based for

chrome/browser/ui/app_list/app_list_syncable_service.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 "chrome/browser/ui/app_list/app_list_syncable_service.h"
 
 #include <utility>
 
 #include "base/command_line.h"
 #include "base/macros.h"
@@ skipping 309 matching lines @@
 void AppListSyncableService::AddObserverAndStart(Observer* observer) {
   observer_list_.AddObserver(observer);
   SyncStarted();
 }
 
 void AppListSyncableService::RemoveObserver(Observer* observer) {
   observer_list_.RemoveObserver(observer);
 }
 
 void AppListSyncableService::NotifyObserversSyncUpdated() {
-  FOR_EACH_OBSERVER(Observer, observer_list_, OnSyncModelUpdated());
+  for (auto& observer : observer_list_)
+    observer.OnSyncModelUpdated();
 }
 
 size_t AppListSyncableService::GetNumSyncItemsForTest() {
   // If the model isn't built yet, there will be no sync items.
   GetModel();
 
   return sync_items_.size();
 }
 
 void AppListSyncableService::ResetDriveAppProviderForTest() {
@@ skipping 733 matching lines @@
     res += " { " + item_name + " }";
     res += " [" + item_ordinal.ToDebugString() + "]";
     if (!parent_id.empty())
       res += " <" + parent_id.substr(0, 8) + ">";
     res += " [" + item_pin_ordinal.ToDebugString() + "]";
   }
   return res;
 }
 
 }  // namespace app_list