Use Microsoft's HMFT for VP9 decoding.

media/gpu/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 MEDIA_GPU_DXVA_VIDEO_DECODE_ACCELERATOR_WIN_H_
 #define MEDIA_GPU_DXVA_VIDEO_DECODE_ACCELERATOR_WIN_H_
 
 #include <d3d11.h>
 #include <d3d9.h>
 #include <initguid.h>
@@ skipping 458 matching lines @@
 
   bool share_nv12_textures_;
 
   // Copy NV12 texture to another NV12 texture.
   bool copy_nv12_textures_;
 
   // Defaults to false. Indicates if we should use D3D or DX11 interfaces for
   // H/W decoding.
   bool use_dx11_;
 
+  // True when using Microsoft's VP9 HMFT for decoding.
+  bool using_ms_vp9_mft_ = false;
+
   // True if we should use DXGI keyed mutexes to synchronize between the two
   // contexts.
   bool use_keyed_mutex_;
 
   // Set to true if the DX11 video format converter input media types need to
   // be initialized. Defaults to true.
   bool dx11_video_format_converter_media_type_needs_init_;
 
   // Set to true if we are sharing ANGLE's device.
   bool using_angle_device_;
@@ skipping 19 matching lines @@
 
   // Function pointer for the MFCreateDXGIDeviceManager API.
   static CreateDXGIDeviceManager create_dxgi_device_manager_;
 
   DISALLOW_COPY_AND_ASSIGN(DXVAVideoDecodeAccelerator);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_GPU_DXVA_VIDEO_DECODE_ACCELERATOR_WIN_H_