Ensure that the code in the DXVA DX11 decoder which can potentially access the DX11 device context …

content/common/gpu/media/dxva_video_decode_accelerator_win.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 CONTENT_COMMON_GPU_MEDIA_DXVA_VIDEO_DECODE_ACCELERATOR_H_
 #define CONTENT_COMMON_GPU_MEDIA_DXVA_VIDEO_DECODE_ACCELERATOR_H_
 
 #include <d3d11.h>
 #include <d3d9.h>
 // Work around bug in this header by disabling the relevant warning for it.
@@ skipping 237 matching lines @@
   media::VideoDecodeAccelerator::Client* client_;
 
   base::win::ScopedComPtr<IMFTransform> decoder_;
   base::win::ScopedComPtr<IMFTransform> video_format_converter_mft_;
 
   base::win::ScopedComPtr<IDirect3D9Ex> d3d9_;
   base::win::ScopedComPtr<IDirect3DDevice9Ex> d3d9_device_ex_;
   base::win::ScopedComPtr<IDirect3DDeviceManager9> device_manager_;
   base::win::ScopedComPtr<IDirect3DQuery9> query_;
 
-  base::win::ScopedComPtr<ID3D11DeviceContext> d3d11_device_context_;
   base::win::ScopedComPtr<ID3D11Device > d3d11_device_;
   base::win::ScopedComPtr<IMFDXGIDeviceManager> d3d11_device_manager_;
-  base::win::ScopedComPtr<ID3D11Query> d3d11_query_;
   base::win::ScopedComPtr<ID3D10Multithread> multi_threaded_;
 
   // Ideally the reset token would be a stack variable which is used while
   // creating the device manager. However it seems that the device manager
   // holds onto the token and attempts to access it if the underlying device
   // changes.
   // TODO(ananta): This needs to be verified.
   uint32 dev_manager_reset_token_;
 
   // Reset token for the DX11 device manager.
@@ skipping 103 matching lines @@
 
   // Function pointer for the MFCreateDXGIDeviceManager API.
   static CreateDXGIDeviceManager create_dxgi_device_manager_;
 
   DISALLOW_COPY_AND_ASSIGN(DXVAVideoDecodeAccelerator);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_COMMON_GPU_MEDIA_DXVA_VIDEO_DECODE_ACCELERATOR_H_