Adding YUVA support for enabling Alpha Playback

cc/layers/video_layer_impl.cc

Index: cc/layers/video_layer_impl.cc
diff --git a/cc/layers/video_layer_impl.cc b/cc/layers/video_layer_impl.cc
index 94125d6735cd18c7ecd53cbd50c42929fbb45736..b5a52661cc72df1d43020abd6e8ead491dd5ca5e 100644
--- a/cc/layers/video_layer_impl.cc
+++ b/cc/layers/video_layer_impl.cc
@@ -201,9 +201,9 @@ void VideoLayerImpl::AppendQuads(QuadSink* quad_sink,
     case media::VideoFrame::YV12:
     case media::VideoFrame::YV16: {
       // YUV software decoder.
-      const FramePlane& y_plane = frame_planes_[media::VideoFrame::kYPlane];
-      const FramePlane& u_plane = frame_planes_[media::VideoFrame::kUPlane];
-      const FramePlane& v_plane = frame_planes_[media::VideoFrame::kVPlane];
+      const FramePlane* y_plane = &frame_planes_[media::VideoFrame::kYPlane];
+      const FramePlane* u_plane = &frame_planes_[media::VideoFrame::kUPlane];
+      const FramePlane* v_plane = &frame_planes_[media::VideoFrame::kVPlane];
       gfx::SizeF tex_scale(tex_width_scale, tex_height_scale);
       scoped_ptr<YUVVideoDrawQuad> yuv_video_quad = YUVVideoDrawQuad::Create();
       yuv_video_quad->SetNew(shared_quad_state,
@@ -212,7 +212,8 @@ void VideoLayerImpl::AppendQuads(QuadSink* quad_sink,
                              tex_scale,
                              y_plane,
                              u_plane,
-                             v_plane);
+                             v_plane,
+                             NULL);
       quad_sink->Append(yuv_video_quad.PassAs<DrawQuad>(), append_quads_data);
       break;
     }