cc: make resource keep video buffer format for hardware overlay.

cc/quads/stream_video_draw_quad.h

Index: cc/quads/stream_video_draw_quad.h
diff --git a/cc/quads/stream_video_draw_quad.h b/cc/quads/stream_video_draw_quad.h
index 68f3bffd87c8723158977816ec52614e82058930..27cd1747830e65e15dfcad11ae6ba3e3da1bc805 100644
--- a/cc/quads/stream_video_draw_quad.h
+++ b/cc/quads/stream_video_draw_quad.h
@@ -11,6 +11,7 @@
 
 #include "cc/base/cc_export.h"
 #include "cc/quads/draw_quad.h"
+#include "ui/gfx/buffer_types.h"
 #include "ui/gfx/transform.h"
 
 namespace cc {
@@ -27,6 +28,7 @@ class CC_EXPORT StreamVideoDrawQuad : public DrawQuad {
               const gfx::Rect& visible_rect,
               unsigned resource_id,
               gfx::Size resource_size_in_pixels,
+              gfx::BufferFormat format,
               const gfx::Transform& matrix);
 
   void SetAll(const SharedQuadState* shared_quad_state,
@@ -36,8 +38,10 @@ class CC_EXPORT StreamVideoDrawQuad : public DrawQuad {
               bool needs_blending,
               unsigned resource_id,
               gfx::Size resource_size_in_pixels,
+              gfx::BufferFormat format,
               const gfx::Transform& matrix);
 
+  gfx::BufferFormat format = gfx::BufferFormat::RGBA_8888;
   gfx::Transform matrix;
 
   struct OverlayResources {