mojo/gpu: use SharedBuffer instead of base::SharedMemory with hacks

mojo/gles2/command_buffer_client_impl.h

 // Copyright 2014 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 MOJO_GLES2_COMMAND_BUFFER_CLIENT_IMPL_H_
 #define MOJO_GLES2_COMMAND_BUFFER_CLIENT_IMPL_H_
 
 #include <map>
 
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
-#include "base/memory/shared_memory.h"
 #include "gpu/command_buffer/common/command_buffer.h"
 #include "gpu/command_buffer/common/command_buffer_shared.h"
 #include "gpu/command_buffer/common/gpu_control.h"
 #include "mojo/public/cpp/bindings/error_handler.h"
 #include "mojo/public/cpp/bindings/remote_ptr.h"
 #include "mojo/services/gles2/command_buffer.mojom.h"
 
 namespace base {
 class RunLoop;
 }
@@ skipping 66 matching lines @@
   virtual void LostContext(int32_t lost_reason) OVERRIDE;
 
   // ErrorHandler implementation:
   virtual void OnError() OVERRIDE;
 
   virtual void DrawAnimationFrame() OVERRIDE;
 
   void TryUpdateState();
   void MakeProgressAndUpdateState();
 
-  gpu::CommandBufferSharedState* shared_state() const {
-    return reinterpret_cast<gpu::CommandBufferSharedState*>(
-        shared_state_shm_->memory());
-  }
+  gpu::CommandBufferSharedState* shared_state() const { return shared_state_; }
 
   CommandBufferDelegate* delegate_;
   RemotePtr<mojo::CommandBuffer> command_buffer_;
   scoped_ptr<SyncDispatcher<CommandBufferSyncClient> > sync_dispatcher_;
 
   State last_state_;
-  scoped_ptr<base::SharedMemory> shared_state_shm_;
+  mojo::ScopedSharedBufferHandle shared_state_handle_;
+  gpu::CommandBufferSharedState* shared_state_;
   int32 last_put_offset_;
   int32 next_transfer_buffer_id_;
 
   bool initialize_result_;
 };
 
 }  // gles2
 }  // mojo
 
 #endif  // MOJO_GLES2_COMMAND_BUFFER_CLIENT_IMPL_H_