Reset the state of the previous frame if overlay processing is skipped.

cc/output/overlay_processor.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CC_OUTPUT_OVERLAY_PROCESSOR_H_
 #define CC_OUTPUT_OVERLAY_PROCESSOR_H_
 
 #include <memory>
 
 #include "base/containers/flat_map.h"
@@ skipping 65 matching lines @@
       ResourceProvider* resource_provider,
       RenderPass* render_pass,
       const base::flat_map<int, FilterOperations*>& render_pass_filters,
       const base::flat_map<int, FilterOperations*>&
           render_pass_background_filters,
       OverlayCandidateList* overlay_candidates,
       DCLayerOverlayList* dc_layer_overlays,
       gfx::Rect* damage_rect);
   // Update |damage_rect| by removing damage casued by |candidates|.
   void UpdateDamageRect(OverlayCandidateList* candidates,
+                        const gfx::Rect& previous_frame_underlay_rect,
                         gfx::Rect* damage_rect);
 
   DCLayerOverlayProcessor dc_processor_;
 
   DISALLOW_COPY_AND_ASSIGN(OverlayProcessor);
 };
 
 }  // namespace cc
 
 #endif  // CC_OUTPUT_OVERLAY_PROCESSOR_H_