Fix scroll restoration when exiting fullscreen mode.

content/public/browser/web_contents.h

Index: content/public/browser/web_contents.h
diff --git a/content/public/browser/web_contents.h b/content/public/browser/web_contents.h
index a96ed1cfc41f87740f56b2e1c2fd6cf3fb618433..988d2611a1919fe3958dbdc79ffd076a037e5abe 100644
--- a/content/public/browser/web_contents.h
+++ b/content/public/browser/web_contents.h
@@ -676,7 +676,10 @@ class WebContents : public PageNavigator,
   virtual void HasManifest(const HasManifestCallback& callback) = 0;
 
   // Requests the renderer to exit fullscreen.
-  virtual void ExitFullscreen() = 0;
+  // |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 ExitFullscreen(bool will_cause_resize) = 0;
 
   // Unblocks requests from renderer for a newly created window. This is
   // used in showCreatedWindow() or sometimes later in cases where