gpu: Remove Create/DeleteImage IPC by adding an X11_PIXMAP_BUFFER GpuMemoryBuffer type.

content/common/gpu/client/gpu_memory_buffer_impl_shm.h

-// Copyright 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 CONTENT_COMMON_GPU_CLIENT_GPU_MEMORY_BUFFER_IMPL_SHM_H_
-#define CONTENT_COMMON_GPU_CLIENT_GPU_MEMORY_BUFFER_IMPL_SHM_H_
-
-#include "content/common/gpu/client/gpu_memory_buffer_impl.h"
-
-namespace content {
-
-// Implementation of GPU memory buffer based on shared memory.
-class GpuMemoryBufferImplShm : public GpuMemoryBufferImpl {
- public:
-  GpuMemoryBufferImplShm(const gfx::Size& size, unsigned internalformat);
-  virtual ~GpuMemoryBufferImplShm();
-
-  // Allocates a shared memory backed GPU memory buffer with |size| and
-  // |internalformat| for use by |child_process|.
-  static void AllocateSharedMemoryForChildProcess(
-      const gfx::Size& size,
-      unsigned internalformat,
-      base::ProcessHandle child_process,
-      const AllocationCallback& callback);
-
-  static bool IsLayoutSupported(const gfx::Size& size, unsigned internalformat);
-  static bool IsUsageSupported(unsigned usage);
-  static bool IsConfigurationSupported(const gfx::Size& size,
-                                       unsigned internalformat,
-                                       unsigned usage);
-
-  bool Initialize();
-  bool InitializeFromHandle(gfx::GpuMemoryBufferHandle handle);
-
-  // Overridden from gfx::GpuMemoryBuffer:
-  virtual void* Map() OVERRIDE;
-  virtual void Unmap() OVERRIDE;
-  virtual uint32 GetStride() const OVERRIDE;
-  virtual gfx::GpuMemoryBufferHandle GetHandle() const OVERRIDE;
-
- private:
-  scoped_ptr<base::SharedMemory> shared_memory_;
-
-  DISALLOW_COPY_AND_ASSIGN(GpuMemoryBufferImplShm);
-};
-
-}  // namespace content
-
-#endif  // CONTENT_COMMON_GPU_CLIENT_GPU_MEMORY_BUFFER_IMPL_SHM_H_