Remove #pragma once from content

content/common/gpu/sync_point_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 CONTENT_COMMON_GPU_SYNC_POINT_MANAGER_H_
 #define CONTENT_COMMON_GPU_SYNC_POINT_MANAGER_H_
-#pragma once
 
 #include <vector>
 
 #include "base/callback.h"
 #include "base/hash_tables.h"
 #include "base/memory/ref_counted.h"
 #include "base/synchronization/lock.h"
 #include "base/threading/thread_checker.h"
 
 // This class manages the sync points, which allow cross-channel
@@ skipping 27 matching lines @@
   // Protects the 2 fields below. Note: callbacks shouldn't be called with this
   // held.
   base::Lock lock_;
   SyncPointMap sync_point_map_;
   uint32 next_sync_point_;
 
   DISALLOW_COPY_AND_ASSIGN(SyncPointManager);
 };
 
 #endif  // CONTENT_COMMON_GPU_SYNC_POINT_MANAGER_H_