Remove #pragma once from content

content/common/gpu/gpu_command_buffer_stub.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_GPU_COMMAND_BUFFER_STUB_H_
 #define CONTENT_COMMON_GPU_GPU_COMMAND_BUFFER_STUB_H_
-#pragma once
 
 #include <deque>
 #include <string>
 #include <vector>
 
 #include "base/id_map.h"
 #include "base/memory/weak_ptr.h"
 #include "base/observer_list.h"
 #include "content/common/content_export.h"
 #include "content/common/gpu/gpu_memory_allocation.h"
@@ skipping 259 matching lines @@
   int sync_point_wait_count_;
 
   bool delayed_work_scheduled_;
 
   scoped_refptr<gpu::RefCountedCounter> preempt_by_counter_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuCommandBufferStub);
 };
 
 #endif  // CONTENT_COMMON_GPU_GPU_COMMAND_BUFFER_STUB_H_