Switch to standard integer types in gpu/.

gpu/command_buffer/client/mapped_memory.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 GPU_COMMAND_BUFFER_CLIENT_MAPPED_MEMORY_H_
 #define GPU_COMMAND_BUFFER_CLIENT_MAPPED_MEMORY_H_
 
+#include <stddef.h>
 #include <stdint.h>
 
 #include "base/bind.h"
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/trace_event/memory_dump_provider.h"
 #include "gpu/command_buffer/client/fenced_allocator.h"
 #include "gpu/command_buffer/common/buffer.h"
 #include "gpu/gpu_export.h"
 
@@ skipping 254 matching lines @@
   uint32_t shm_offset_;
   bool flush_after_release_;
   CommandBufferHelper* helper_;
   MappedMemoryManager* mapped_memory_manager_;
   DISALLOW_COPY_AND_ASSIGN(ScopedMappedMemoryPtr);
 };
 
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_CLIENT_MAPPED_MEMORY_H_