Turn off computation of the interest rect in cc in synchronized paint mode.

cc/playback/display_list_recording_source.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_PLAYBACK_DISPLAY_LIST_RECORDING_SOURCE_H_
 #define CC_PLAYBACK_DISPLAY_LIST_RECORDING_SOURCE_H_
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "cc/base/cc_export.h"
@@ skipping 21 matching lines @@
   };
 
   DisplayListRecordingSource();
   virtual ~DisplayListRecordingSource();
 
   bool UpdateAndExpandInvalidation(ContentLayerClient* painter,
                                    Region* invalidation,
                                    const gfx::Size& layer_size,
                                    const gfx::Rect& visible_layer_rect,
                                    int frame_number,
-                                   RecordingMode recording_mode);
+                                   RecordingMode recording_mode,
+                                   bool blink_synchronized_painting_enabled);
   gfx::Size GetSize() const;
   void SetEmptyBounds();
   void SetSlowdownRasterScaleFactor(int factor);
   void SetGenerateDiscardableImagesMetadata(bool generate_metadata);
   void SetBackgroundColor(SkColor background_color);
   void SetRequiresClear(bool requires_clear);
 
   // These functions are virtual for testing.
   virtual scoped_refptr<DisplayListRasterSource> CreateRasterSource(
       bool can_use_lcd_text) const;
@@ skipping 29 matching lines @@
   friend class DisplayListRasterSource;
 
   void DetermineIfSolidColor();
 
   DISALLOW_COPY_AND_ASSIGN(DisplayListRecordingSource);
 };
 
 }  // namespace cc
 
 #endif  // CC_PLAYBACK_DISPLAY_LIST_RECORDING_SOURCE_H_