Get rid of the relative paths in command_buffer client/common

gpu/command_buffer/client/gpu_memory_buffer_mock.h

 // Copyright (c) 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.
 
 #ifndef GPU_COMMAND_BUFFER_CLIENT_GPU_MEMORY_BUFFER_MOCK_H_
 #define GPU_COMMAND_BUFFER_CLIENT_GPU_MEMORY_BUFFER_MOCK_H_
 
-#include "../client/gpu_memory_buffer.h"
+#include "gpu/command_buffer/client/gpu_memory_buffer.h"
 #include "base/basictypes.h"
 #include "testing/gmock/include/gmock/gmock.h"
 
 namespace gpu {
 
 class GpuMemoryBufferMock : public GpuMemoryBuffer {
  public:
   GpuMemoryBufferMock(int width, int height);
   virtual ~GpuMemoryBufferMock();
 
   MOCK_METHOD2(Map, void(GpuMemoryBuffer::AccessMode, void**));
   MOCK_METHOD0(Unmap, void());
   MOCK_METHOD0(IsMapped, bool());
   MOCK_METHOD0(GetNativeBuffer, void*());
   MOCK_METHOD0(GetStride, uint32());
   MOCK_METHOD0(Die, void());
 
  private:
   DISALLOW_COPY_AND_ASSIGN(GpuMemoryBufferMock);
 };
 
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_CLIENT_GPU_MEMORY_BUFFER_MOCK_H_