Don't require VDAs to return all PictureBuffers at once.

gpu/config/gpu_info.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 GPU_CONFIG_GPU_INFO_H_
 #define GPU_CONFIG_GPU_INFO_H_
 
 // Provides access to the GPU information for the system
 // on which chrome is currently running.
 
@@ skipping 42 matching lines @@
   VP9PROFILE_ANY = 12,
   VIDEO_CODEC_PROFILE_MAX = VP9PROFILE_ANY,
 };
 
 // Specification of a decoding profile supported by a hardware decoder.
 struct GPU_EXPORT VideoDecodeAcceleratorSupportedProfile {
   VideoCodecProfile profile;
   gfx::Size max_resolution;
   gfx::Size min_resolution;
 };
+
 using VideoDecodeAcceleratorSupportedProfiles =
     std::vector<VideoDecodeAcceleratorSupportedProfile>;
 
+struct GPU_EXPORT VideoDecodeAcceleratorCapabilities {
+  VideoDecodeAcceleratorCapabilities() : flags(0) {}
+  VideoDecodeAcceleratorSupportedProfiles supported_profiles;
+  uint32 flags;
+};
+
 // Specification of an encoding profile supported by a hardware encoder.
 struct GPU_EXPORT VideoEncodeAcceleratorSupportedProfile {
   VideoCodecProfile profile;
   gfx::Size max_resolution;
   uint32 max_framerate_numerator;
   uint32 max_framerate_denominator;
 };
 using VideoEncodeAcceleratorSupportedProfiles =
     std::vector<VideoEncodeAcceleratorSupportedProfile>;
 
@@ skipping 137 matching lines @@
   // if the collection fails or not.
   CollectInfoResult basic_info_state;
   CollectInfoResult context_info_state;
 #if defined(OS_WIN)
   CollectInfoResult dx_diagnostics_info_state;
 
   // The information returned by the DirectX Diagnostics Tool.
   DxDiagNode dx_diagnostics;
 #endif
 
-  VideoDecodeAcceleratorSupportedProfiles
-      video_decode_accelerator_supported_profiles;
+  VideoDecodeAcceleratorCapabilities video_decode_accelerator_capabilities;
   VideoEncodeAcceleratorSupportedProfiles
       video_encode_accelerator_supported_profiles;
   bool jpeg_decode_accelerator_supported;
 
   // Note: when adding new members, please remember to update EnumerateFields
   // in gpu_info.cc.
 
   // In conjunction with EnumerateFields, this allows the embedder to
   // enumerate the values in this structure without having to embed
   // references to its specific member variables. This simplifies the
@@ skipping 34 matching lines @@
     virtual ~Enumerator() {}
   };
 
   // Outputs the fields in this structure to the provided enumerator.
   void EnumerateFields(Enumerator* enumerator) const;
 };
 
 }  // namespace gpu
 
 #endif  // GPU_CONFIG_GPU_INFO_H_