Adding YUVA support for enabling Alpha Playback

cc/output/gl_renderer.h

Index: cc/output/gl_renderer.h
diff --git a/cc/output/gl_renderer.h b/cc/output/gl_renderer.h
index 549f7aeccefac4cc4ed4a3fa42fced19994e7021..a5d7a3d12935536aa39a4ca9fa3a6263ffa1f1ca 100644
--- a/cc/output/gl_renderer.h
+++ b/cc/output/gl_renderer.h
@@ -144,6 +144,8 @@ class CC_EXPORT GLRenderer :
                        ResourceProvider::ResourceId resource_id);
   void DrawYUVVideoQuad(const DrawingFrame* frame,
                         const YUVVideoDrawQuad* quad);
+  void DrawYUVAVideoQuad(const DrawingFrame* frame,
+                         const YUVVideoDrawQuad* quad);
   void DrawPictureQuad(const DrawingFrame* frame,
                        const PictureDrawQuad* quad);
 
@@ -250,6 +252,8 @@ class CC_EXPORT GLRenderer :
       VideoStreamTextureProgram;
   typedef ProgramBinding<VertexShaderPosTexYUVStretch, FragmentShaderYUVVideo>
       VideoYUVProgram;
+  typedef ProgramBinding<VertexShaderPosTexYUVStretch, FragmentShaderYUVAVideo>
+      VideoYUVAProgram;
 
   // Special purpose / effects shaders.
   typedef ProgramBinding<VertexShaderPos, FragmentShaderColor>
@@ -277,6 +281,7 @@ class CC_EXPORT GLRenderer :
   const TextureIOSurfaceProgram* GetTextureIOSurfaceProgram();
 
   const VideoYUVProgram* GetVideoYUVProgram();
+  const VideoYUVAProgram* GetVideoYUVAProgram();

[danakj, 2013/04/03 00:42:04]

By the way, when adding a new program, please add it to the shader unit tests in
gl_renderer_unittest.cc as well.

[vignesh, 2013/04/04 00:37:33]

Done.

   const VideoStreamTextureProgram* GetVideoStreamTextureProgram();
 
   const DebugBorderProgram* GetDebugBorderProgram();
@@ -301,6 +306,7 @@ class CC_EXPORT GLRenderer :
   scoped_ptr<TextureIOSurfaceProgram> texture_io_surface_program_;
 
   scoped_ptr<VideoYUVProgram> video_yuv_program_;
+  scoped_ptr<VideoYUVAProgram> video_yuva_program_;
   scoped_ptr<VideoStreamTextureProgram> video_stream_texture_program_;
 
   scoped_ptr<DebugBorderProgram> debug_border_program_;