Move Mailbox from cc to gpu, and its traits to gpu/ipc

cc/transferable_resource.h

 // Copyright 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 CC_TRANSFERABLE_RESOURCE_H_
 #define CC_TRANSFERABLE_RESOURCE_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
 #include "cc/cc_export.h"
+#include "gpu/command_buffer/common/mailbox.h"
 #include "ui/gfx/size.h"
 
 namespace cc {
 
-struct CC_EXPORT Mailbox {
-  Mailbox();
-  bool isZero() const;
-  void setName(const int8* name);
-  int8 name[64];
-};
-
 struct CC_EXPORT TransferableResource {
   TransferableResource();
   ~TransferableResource();
 
   unsigned id;
   unsigned sync_point;
   uint32 format;
   uint32 filter;
   gfx::Size size;
-  Mailbox mailbox;
+  gpu::Mailbox mailbox;
 };
 
 typedef std::vector<TransferableResource> TransferableResourceArray;
 
 }  // namespace cc
 
 #endif  // CC_TRANSFERABLE_RESOURCE_H_