Get rid of the relative paths in command_buffer client/common

gpu/command_buffer/common/command_buffer_mock.h

 // Copyright (c) 2011 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_COMMON_COMMAND_BUFFER_MOCK_H_
 #define GPU_COMMAND_BUFFER_COMMON_COMMAND_BUFFER_MOCK_H_
 
-#include "../common/command_buffer.h"
+#include "gpu/command_buffer/common/command_buffer.h"
 #include "testing/gmock/include/gmock/gmock.h"
 
 namespace base {
 class SharedMemory;
 }
 
 namespace gpu {
 
 // An NPObject that implements a shared memory command buffer and a synchronous
 // API to manage the put and get pointers.
@@ skipping 19 matching lines @@
                void(error::ContextLostReason context_lost_reason));
   MOCK_METHOD0(InsertSyncPoint, uint32());
 
  private:
   DISALLOW_COPY_AND_ASSIGN(MockCommandBuffer);
 };
 
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_COMMON_COMMAND_BUFFER_MOCK_H_