Remove #pragma once from chrome/browser/extensions

chrome/browser/extensions/app_notification_manager.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.
 
 #ifndef CHROME_BROWSER_EXTENSIONS_APP_NOTIFICATION_MANAGER_H_
 #define CHROME_BROWSER_EXTENSIONS_APP_NOTIFICATION_MANAGER_H_
-#pragma once
 
 #include <map>
 
 #include "base/compiler_specific.h"
 #include "base/gtest_prod_util.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/sequenced_task_runner_helpers.h"
 #include "base/synchronization/waitable_event.h"
 #include "chrome/browser/extensions/app_notification.h"
@@ skipping 157 matching lines @@
   // Whether syncer changes are being processed right now.
   bool processing_syncer_changes_;
 
   // Used for a histogram of load time.
   scoped_ptr<PerfTimer> load_timer_;
 
   DISALLOW_COPY_AND_ASSIGN(AppNotificationManager);
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_APP_NOTIFICATION_MANAGER_H_