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

gpu/config/gpu_info.h

Index: gpu/config/gpu_info.h
diff --git a/gpu/config/gpu_info.h b/gpu/config/gpu_info.h
index d6f61fd60f79e027655477675c041937c3919cd0..7d49a8f4a4d730ca344faf83250e7c7667cce040 100644
--- a/gpu/config/gpu_info.h
+++ b/gpu/config/gpu_info.h
@@ -59,6 +59,7 @@ 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>;