Add hints for potential overlay promotion on android.

media/gpu/android_video_decode_accelerator.cc

Index: media/gpu/android_video_decode_accelerator.cc
diff --git a/media/gpu/android_video_decode_accelerator.cc b/media/gpu/android_video_decode_accelerator.cc
index de67510f8e0cf7ef6798dc8bd661536951cb5bc5..e94cb5e09cb715225bdf249092d17440e56707d4 100644
--- a/media/gpu/android_video_decode_accelerator.cc
+++ b/media/gpu/android_video_decode_accelerator.cc
@@ -825,12 +825,13 @@ void AndroidVideoDecodeAccelerator::SendDecodedFrameToClient(
   if (size_changed)
     picture_buffer.set_size(size_);
 
-  const bool allow_overlay = picture_buffer_manager_.ArePicturesOverlayable();
-  UMA_HISTOGRAM_BOOLEAN("Media.AVDA.FrameSentAsOverlay", allow_overlay);
+  const bool surface_view = picture_buffer_manager_.ArePicturesOverlayable();
+  UMA_HISTOGRAM_BOOLEAN("Media.AVDA.FrameSentAsOverlay", surface_view);
   // TODO(hubbe): Insert the correct color space. http://crbug.com/647725
   Picture picture(picture_buffer_id, bitstream_id, gfx::Rect(size_),
-                  gfx::ColorSpace(), allow_overlay);
+                  gfx::ColorSpace(), true /* allow_overlay */);
   picture.set_size_changed(size_changed);
+  picture.set_surface_texture(!surface_view);

[liberato (no reviews please), 2016/11/19 18:25:52]

this is where the "backed by surface texture" flag is set initially.

the flag follows roughly this: picture (AVDA) => VideoFrameMetaData
(GpuVideoDecoder) => TextureMailbox (VideoResourceUpdater) => Resource
(ResourceUpdater) => TransferableResource => Resource => overlay_processor.

 
   // Notify picture ready before calling UseCodecBufferForPictureBuffer() since
   // that process may be slow and shouldn't delay delivery of the frame to the