[NotForReview] Enable YUV video overlay on Skylake ChromeOS.

media/gpu/vaapi_video_decode_accelerator.cc

Index: media/gpu/vaapi_video_decode_accelerator.cc
diff --git a/media/gpu/vaapi_video_decode_accelerator.cc b/media/gpu/vaapi_video_decode_accelerator.cc
index a119f0fd16b039ddefc831c5be2fef71e14837de..f20e488b9a7b5ece41cfd2d314b92c95367a93c5 100644
--- a/media/gpu/vaapi_video_decode_accelerator.cc
+++ b/media/gpu/vaapi_video_decode_accelerator.cc
@@ -41,7 +41,10 @@ enum VAVDADecoderFailure {
 
 // Buffer format to use for output buffers backing PictureBuffers. This is the
 // format decoded frames in VASurfaces are converted into.
-const gfx::BufferFormat kAllocatePictureFormat = gfx::BufferFormat::BGRA_8888;
+// gfx::BufferFormat::UYVY_422;
+// gfx::BufferFormat::BGRA_8888;
+const gfx::BufferFormat kAllocatePictureFormat = gfx::BufferFormat::YUYV_422;
+
 const gfx::BufferFormat kImportPictureFormat = gfx::BufferFormat::YVU_420;
 }
 
@@ -433,6 +436,7 @@ void VaapiVideoDecodeAccelerator::OutputPicture(
   // (crbug.com/402760). Passing (0, 0) results in the client using the
   // visible size extracted from the container instead.
   // TODO(hubbe): Use the correct color space.  http://crbug.com/647725
+  PLOG(ERROR) << "Video decoder ready with format ";
   if (client_)
     client_->PictureReady(Picture(output_id, input_id, gfx::Rect(0, 0),
                                   gfx::ColorSpace(), picture->AllowOverlay()));
@@ -668,6 +672,12 @@ static VideoPixelFormat BufferFormatToVideoPixelFormat(
     case gfx::BufferFormat::YVU_420:
       return PIXEL_FORMAT_YV12;
 
+    case gfx::BufferFormat::UYVY_422:
+      return PIXEL_FORMAT_UYVY;
+
+    case gfx::BufferFormat::YUYV_422:
+      return PIXEL_FORMAT_YUY2;
+
     default:
       LOG(FATAL) << "Add more cases as needed";
       return PIXEL_FORMAT_UNKNOWN;
@@ -714,6 +724,7 @@ void VaapiVideoDecodeAccelerator::TryFinishSurfaceSetChange() {
            << " pictures of size: " << requested_pic_size_.ToString();
 
   VideoPixelFormat format = BufferFormatToVideoPixelFormat(output_format_);
+  PLOG(ERROR) << "Request video pixel buffer " << format;
   task_runner_->PostTask(
       FROM_HERE, base::Bind(&Client::ProvidePictureBuffers, client_,
                             requested_num_pics_, format, 1, requested_pic_size_,