Adding YUVA support for enabling Alpha Playback

cc/gl_renderer.h

Index: cc/gl_renderer.h
diff --git a/cc/gl_renderer.h b/cc/gl_renderer.h
index c2cb9ce5c8c72cb31fe287951265aab7e976901f..ceae34cc9c82685366ba73bd7ecdfe1731caedeb 100644
--- a/cc/gl_renderer.h
+++ b/cc/gl_renderer.h
@@ -17,6 +17,7 @@
 #include "cc/solid_color_draw_quad.h"
 #include "cc/tile_draw_quad.h"
 #include "cc/yuv_video_draw_quad.h"
+#include "cc/yuva_video_draw_quad.h"
 #include "third_party/WebKit/Source/Platform/chromium/public/WebGraphicsContext3D.h"
 #include "third_party/WebKit/Source/Platform/chromium/public/WebGraphicsMemoryAllocation.h"
 #include "ui/gfx/quad_f.h"
@@ -106,6 +107,7 @@ private:
     void drawIOSurfaceQuad(const DrawingFrame&, const IOSurfaceDrawQuad*);
     void drawTileQuad(const DrawingFrame&, const TileDrawQuad*);
     void drawYUVVideoQuad(const DrawingFrame&, const YUVVideoDrawQuad*);
+    void drawYUVAVideoQuad(const DrawingFrame&, const YUVAVideoDrawQuad*);
 
     void setShaderOpacity(float opacity, int alphaLocation);
     void setShaderQuadF(const gfx::QuadF&, int quadLocation);
@@ -166,6 +168,7 @@ private:
     // Video shaders.
     typedef ProgramBinding<VertexShaderVideoTransform, FragmentShaderOESImageExternal> VideoStreamTextureProgram;
     typedef ProgramBinding<VertexShaderPosTexYUVStretch, FragmentShaderYUVVideo> VideoYUVProgram;
+    typedef ProgramBinding<VertexShaderPosTexYUVStretch, FragmentShaderYUVAVideo> VideoYUVAProgram;
 
     // Special purpose / effects shaders.
     typedef ProgramBinding<VertexShaderPos, FragmentShaderColor> SolidColorProgram;
@@ -188,6 +191,7 @@ private:
     const TextureIOSurfaceProgram* textureIOSurfaceProgram();
 
     const VideoYUVProgram* videoYUVProgram();
+    const VideoYUVAProgram* videoYUVAProgram();
     const VideoStreamTextureProgram* videoStreamTextureProgram();
 
     const SolidColorProgram* solidColorProgram();
@@ -210,6 +214,7 @@ private:
     scoped_ptr<TextureIOSurfaceProgram> m_textureIOSurfaceProgram;
 
     scoped_ptr<VideoYUVProgram> m_videoYUVProgram;
+    scoped_ptr<VideoYUVAProgram> m_videoYUVAProgram;
     scoped_ptr<VideoStreamTextureProgram> m_videoStreamTextureProgram;
 
     scoped_ptr<SolidColorProgram> m_solidColorProgram;