Fix scroll restoration when exiting fullscreen mode.

content/browser/frame_host/render_frame_host_delegate.h

Index: content/browser/frame_host/render_frame_host_delegate.h
diff --git a/content/browser/frame_host/render_frame_host_delegate.h b/content/browser/frame_host/render_frame_host_delegate.h
index ee5aae52bda611ff4eff5537c44a373a427dae52..fca7a94aaec60991bdaabc490f29941186b368d0 100644
--- a/content/browser/frame_host/render_frame_host_delegate.h
+++ b/content/browser/frame_host/render_frame_host_delegate.h
@@ -153,7 +153,10 @@ class CONTENT_EXPORT RenderFrameHostDelegate {
   virtual void EnterFullscreenMode(const GURL& origin) {}
 
   // Notification that the frame wants to go out of fullscreen mode.
-  virtual void ExitFullscreenMode() {}
+  // |will_cause_resize| indicates whether the fullscreen change causes a
+  // view resize. e.g. This will be false when going from tab fullscreen to
+  // browser fullscreen.
+  virtual void ExitFullscreenMode(bool will_cause_resize) {}
 
   // Let the delegate decide whether postMessage should be delivered to
   // |target_rfh| from a source frame in the given SiteInstance.  This defaults