Increase YUV video clamping

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 15bce98d6f739fbe75515d963afe6d075719ae75..03276eb0c890d02405a3fa9258f782d9fd420d6c 100644
--- a/cc/quads/yuv_video_draw_quad.h
+++ b/cc/quads/yuv_video_draw_quad.h
@@ -30,7 +30,8 @@ class CC_EXPORT YUVVideoDrawQuad : public DrawQuad {
               const gfx::Rect& opaque_rect,
               const gfx::Rect& visible_rect,
               const gfx::RectF& tex_coord_rect,
-              const gfx::Size& tex_size,
+              const gfx::Size& ya_tex_size,
+              const gfx::Size& uv_tex_size,
               unsigned y_plane_resource_id,
               unsigned u_plane_resource_id,
               unsigned v_plane_resource_id,
@@ -43,7 +44,8 @@ class CC_EXPORT YUVVideoDrawQuad : public DrawQuad {
               const gfx::Rect& visible_rect,
               bool needs_blending,
               const gfx::RectF& tex_coord_rect,
-              const gfx::Size& tex_size,
+              const gfx::Size& ya_tex_size,
+              const gfx::Size& uv_tex_size,
               unsigned y_plane_resource_id,
               unsigned u_plane_resource_id,
               unsigned v_plane_resource_id,
@@ -52,7 +54,8 @@ class CC_EXPORT YUVVideoDrawQuad : public DrawQuad {
 
   gfx::RectF tex_coord_rect;
   // Empty texture size implies no clamping of texture coordinates.
-  gfx::Size tex_size;
+  gfx::Size ya_tex_size;
+  gfx::Size uv_tex_size;
   unsigned y_plane_resource_id;
   unsigned u_plane_resource_id;
   unsigned v_plane_resource_id;