Add support for detecting the maximum resolution supported by the GPU for H.264 videos.

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>
+#include <initguid.h>
 #include <stdint.h>
 // Work around bug in this header by disabling the relevant warning for it.
 // https://connect.microsoft.com/VisualStudio/feedback/details/911260/dxva2api-h-in-win8-sdk-triggers-c4201-with-w4
 #pragma warning(push)
 #pragma warning(disable:4201)
 #include <dxva2api.h>
 #pragma warning(pop)
 #include <mfidl.h>
 
 #include <list>
@@ skipping 100 matching lines @@
   static media::VideoDecodeAccelerator::SupportedProfiles
       GetSupportedProfiles();
 
   // Preload dlls required for decoding.
   static void PreSandboxInitialization();
 
  private:
   typedef void* EGLConfig;
   typedef void* EGLSurface;
 
+  // Returns the minimum resolution for the |profile| passed in.
+  static std::pair<int, int> GetMinResolution(
+    const media::VideoCodecProfile profile);
+
+  // Returns the maximum resolution for the |profile| passed in.
+  static std::pair<int, int> GetMaxResolution(
+    const media::VideoCodecProfile profile);
+
+  // Returns the maximum resolution for H264 video.
+  static std::pair<int, int> GetMaxH264Resolution();
+
   // Creates and initializes an instance of the D3D device and the
   // corresponding device manager. The device manager instance is eventually
   // passed to the IMFTransform interface implemented by the decoder.
   bool CreateD3DDevManager();
 
   // Creates and initializes an instance of the DX11 device and the
   // corresponding device manager. The device manager instance is eventually
   // passed to the IMFTransform interface implemented by the decoder.
   bool CreateDX11DevManager();
 
@@ skipping 319 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_