Add support to send optimal format as part of ScheduleOverlayPlane

gpu/command_buffer/client/context_support.h

Index: gpu/command_buffer/client/context_support.h
diff --git a/gpu/command_buffer/client/context_support.h b/gpu/command_buffer/client/context_support.h
index 19218aa2a6f84f61d46ae8b5772086a4f7d209e4..303b55cda03e7910e5a070de013427a30eb8d4f7 100644
--- a/gpu/command_buffer/client/context_support.h
+++ b/gpu/command_buffer/client/context_support.h
@@ -6,6 +6,7 @@
 #define GPU_COMMAND_BUFFER_CLIENT_CONTEXT_SUPPORT_H_
 
 #include "base/callback.h"
+#include "ui/gfx/buffer_types.h"
 #include "ui/gfx/overlay_transform.h"
 
 namespace gfx {
@@ -46,9 +47,11 @@ class ContextSupport {
   // This method is not stateful and needs to be re-scheduled every frame.
   virtual void ScheduleOverlayPlane(int plane_z_order,
                                     gfx::OverlayTransform plane_transform,
+                                    gfx::BufferFormat storage_format,
                                     unsigned overlay_texture_id,
                                     const gfx::Rect& display_bounds,
-                                    const gfx::RectF& uv_rect) = 0;
+                                    const gfx::RectF& uv_rect,
+                                    bool handle_scaling) = 0;
 
   virtual uint32 InsertFutureSyncPointCHROMIUM() = 0;
   virtual void RetireSyncPointCHROMIUM(uint32 sync_point) = 0;