The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/2596c1bd42b9153c527d8361dc7f2837c50c9ca6

commit 2596c1bd42b9153c527d8361dc7f2837c50c9ca6
Author: Peng Huang <penghuang@chromium.org>
Date: Wed Nov 28 18:58:51 2018

Switch to the new YUVA promise texture API

known issues:
 * skia doesn't support GL_RG8 format uv texture.
 * gpu::GetGrBackendTexture() doesn't support GL_R8 and GL_RG8
   formats.


Bug:  908842 
Change-Id: Ice3ffa1135a5b9fdbbb69bcb8175c5f9e196e778
Reviewed-on: https://chromium-review.googlesource.com/c/1347108
Reviewed-by: weiliangc <weiliangc@chromium.org>
Commit-Queue: Peng Huang <penghuang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#611803}
[modify] https://crrev.com/2596c1bd42b9153c527d8361dc7f2837c50c9ca6/components/viz/service/display_embedder/skia_output_surface_impl.cc

Skia has added GL_RG texture support, and I tested with youtube, video playback works.