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 41 matching lines @@
   VP8PROFILE_ANY = 11,
   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;
+  uint32 flags;

[Pawel Osciak, 2015/12/04 11:09:45]

Do we need this in each profile? Do we expect these to differ between different
profiles?

Could we perhaps generalize GetSupportedProfiles IPC to GetDecoderCapabilities
and make it contain a set of flags and the SupportedProfiles vector separately
instead please?

[liberato (no reviews please), 2015/12/04 18:28:58]

Done.

 };
 using VideoDecodeAcceleratorSupportedProfiles =
     std::vector<VideoDecodeAcceleratorSupportedProfile>;
 
 // 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;
@@ skipping 197 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_