media: Convert I420 VideoFrame to UYVY GpuMemoryBuffer.

media/blink/skcanvas_video_renderer.cc

Index: media/blink/skcanvas_video_renderer.cc
diff --git a/media/blink/skcanvas_video_renderer.cc b/media/blink/skcanvas_video_renderer.cc
index a36a9ede331471f45ece7148dbf27206262abec0..6aa863e89b1bc19cfc92a8ad2f84c89f2be6c209 100644
--- a/media/blink/skcanvas_video_renderer.cc
+++ b/media/blink/skcanvas_video_renderer.cc
@@ -138,7 +138,8 @@ bool ShouldCacheVideoFrameSkImage(const VideoFrame* video_frame) {
 skia::RefPtr<SkImage> NewSkImageFromVideoFrameNative(
     VideoFrame* video_frame,
     const Context3D& context_3d) {
-  DCHECK_EQ(PIXEL_FORMAT_ARGB, video_frame->format());
+  DCHECK(PIXEL_FORMAT_ARGB == video_frame->format() ||
+         PIXEL_FORMAT_UYVY == video_frame->format());

[reveman, 2015/08/21 21:53:03]

and why this change?

[Daniele Castagna, 2015/08/21 22:46:04]

Same as the above, if the VideoFrame gets converted to GMBs, it can end up in
PIXEL_FORMAT_UYVY format.

[reveman, 2015/08/22 14:04:46]

what is this format used for? determines how to sample from the native textures
or something else?

 
   const gpu::MailboxHolder& mailbox_holder = video_frame->mailbox_holder(0);
   DCHECK(mailbox_holder.texture_target == GL_TEXTURE_2D ||