Fixing race conditions in ui::content::WindowSlider which could cause the overscroll overlay to nev…

content/browser/web_contents/aura/overscroll_navigation_overlay.h

Index: content/browser/web_contents/aura/overscroll_navigation_overlay.h
diff --git a/content/browser/web_contents/aura/overscroll_navigation_overlay.h b/content/browser/web_contents/aura/overscroll_navigation_overlay.h
index 68a60a2c025e5eed901c23e01926d5acb5ec2cef..9786f21327dc616f529b1d5afc69ebdfb2010e1d 100644
--- a/content/browser/web_contents/aura/overscroll_navigation_overlay.h
+++ b/content/browser/web_contents/aura/overscroll_navigation_overlay.h
@@ -81,9 +81,10 @@ class CONTENT_EXPORT OverscrollNavigationOverlay
   void OnUpdateRect(const ViewHostMsg_UpdateRect_Params& params);
 
   // Overridden from WindowSlider::Delegate:
-  virtual ui::Layer* CreateBackLayer() OVERRIDE;
-  virtual ui::Layer* CreateFrontLayer() OVERRIDE;
-  virtual void OnWindowSlideComplete() OVERRIDE;
+  virtual ui::Layer* OnSlideBackStartedCreateLayer() OVERRIDE;
+  virtual ui::Layer* OnSlideForwardStartedCreateLayer() OVERRIDE;
+  virtual void OnWindowFlingStarted() OVERRIDE;
+  virtual void OnWindowFlingCompleted() OVERRIDE;
   virtual void OnWindowSlideAborted() OVERRIDE;
   virtual void OnWindowSliderDestroyed() OVERRIDE;