Plumb overlay processing into DirectRenderer.

gpu/command_buffer/client/gles2_implementation.h

Index: gpu/command_buffer/client/gles2_implementation.h
diff --git a/gpu/command_buffer/client/gles2_implementation.h b/gpu/command_buffer/client/gles2_implementation.h
index 314261f42e240f92043c531fe43cf7ec3b82c02b..3e09a25616334c421a66a9d59ab5793f9d92cd69 100644
--- a/gpu/command_buffer/client/gles2_implementation.h
+++ b/gpu/command_buffer/client/gles2_implementation.h
@@ -220,6 +220,11 @@ class GLES2_IMPL_EXPORT GLES2Implementation
   virtual void SetSwapBuffersCompleteCallback(
       const base::Closure& swap_buffers_complete_callback)
           OVERRIDE;
+  virtual void ScheduleOverlayPlane(int plane_z_order,
+                                    unsigned plane_transform,
+                                    unsigned overlay_texture_id,
+                                    const gfx::Rect& display_bounds,
+                                    gfx::RectF uv_rect) OVERRIDE;
 
   void GetProgramInfoCHROMIUMHelper(GLuint program, std::vector<int8>* result);
   GLint GetAttribLocationHelper(GLuint program, const char* name);