Adding YUVA support for enabling Alpha Playback

cc/quads/yuv_video_draw_quad.h

Index: cc/quads/yuv_video_draw_quad.h
diff --git a/cc/quads/yuv_video_draw_quad.h b/cc/quads/yuv_video_draw_quad.h
index 8885a5a97aebad6997aa6292e7106ec61d35c82e..5ddf4bac3343c6ab0dca21c18e7a9984ac09eb56 100644
--- a/cc/quads/yuv_video_draw_quad.h
+++ b/cc/quads/yuv_video_draw_quad.h
@@ -27,6 +27,15 @@ class CC_EXPORT YUVVideoDrawQuad : public DrawQuad {
               const VideoLayerImpl::FramePlane& u_plane,
               const VideoLayerImpl::FramePlane& v_plane);
 
+  void SetNew(const SharedQuadState* shared_quad_state,

[danakj, 2013/04/04 15:01:55]

There should be only one SetNew() or SetAll() here.

Since planes are optional, how about changing them to be const* instead of
const&, then we can pass in a NULL a_plane if there's none present?

[vignesh, 2013/04/04 22:06:14]

Done.

+              gfx::Rect rect,
+              gfx::Rect opaque_rect,
+              gfx::SizeF tex_scale,
+              const VideoLayerImpl::FramePlane& y_plane,
+              const VideoLayerImpl::FramePlane& u_plane,
+              const VideoLayerImpl::FramePlane& v_plane,
+              const VideoLayerImpl::FramePlane& a_plane);
+
   void SetAll(const SharedQuadState* shared_quad_state,
               gfx::Rect rect,
               gfx::Rect opaque_rect,
@@ -37,10 +46,22 @@ class CC_EXPORT YUVVideoDrawQuad : public DrawQuad {
               const VideoLayerImpl::FramePlane& u_plane,
               const VideoLayerImpl::FramePlane& v_plane);
 
+  void SetAll(const SharedQuadState* shared_quad_state,
+              gfx::Rect rect,
+              gfx::Rect opaque_rect,
+              gfx::Rect visible_rect,
+              bool needs_blending,
+              gfx::SizeF tex_scale,
+              const VideoLayerImpl::FramePlane& y_plane,
+              const VideoLayerImpl::FramePlane& u_plane,
+              const VideoLayerImpl::FramePlane& v_plane,
+              const VideoLayerImpl::FramePlane& a_plane);
+
   gfx::SizeF tex_scale;
   VideoLayerImpl::FramePlane y_plane;
   VideoLayerImpl::FramePlane u_plane;
   VideoLayerImpl::FramePlane v_plane;
+  VideoLayerImpl::FramePlane a_plane;
 
   virtual void IterateResources(const ResourceIteratorCallback& callback)
       OVERRIDE;