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content/browser/compositor/delegated_frame_host.h

Index: content/browser/compositor/delegated_frame_host.h
diff --git a/content/browser/compositor/delegated_frame_host.h b/content/browser/compositor/delegated_frame_host.h
index 6d5741e37ed786323bf16d25397c16674bdb9b33..493b2b2c75eba24a38971f99df6dce179313fbbe 100644
--- a/content/browser/compositor/delegated_frame_host.h
+++ b/content/browser/compositor/delegated_frame_host.h
@@ -225,7 +225,7 @@ class CONTENT_EXPORT DelegatedFrameHost
   virtual void ReturnResources(
       const cc::ReturnedResourceArray& resources) OVERRIDE;
 
-  void DidReceiveFrameFromRenderer();
+  void DidReceiveFrameFromRenderer(const gfx::Rect& damage_rect);
 
   DelegatedFrameHostClient* client_;
 
@@ -238,6 +238,11 @@ class CONTENT_EXPORT DelegatedFrameHost
   // The vsync manager we are observing for changes, if any.
   scoped_refptr<ui::CompositorVSyncManager> vsync_manager_;
 
+  // The current VSync timebase and interval. These are zero until the first
+  // call to OnUpdateVSyncParameters().
+  base::TimeTicks vsync_timebase_;
+  base::TimeDelta vsync_interval_;
+
   // With delegated renderer, this is the last output surface, used to
   // disambiguate resources with the same id coming from different output
   // surfaces.