Correctly update the popup window position

content/browser/renderer_host/render_widget_host_view_aura.h

Index: content/browser/renderer_host/render_widget_host_view_aura.h
diff --git a/content/browser/renderer_host/render_widget_host_view_aura.h b/content/browser/renderer_host/render_widget_host_view_aura.h
index 6b880fadd32008ee2935fb01990215f6d21e67a8..dbf3024f8b635fa3f21fed69baa58a67038324fc 100644
--- a/content/browser/renderer_host/render_widget_host_view_aura.h
+++ b/content/browser/renderer_host/render_widget_host_view_aura.h
@@ -332,6 +332,9 @@ class CONTENT_EXPORT RenderWidgetHostViewAura
     return delegated_frame_host_.get();
   }
 
+  // Returns the top level window that is hosting the renderwidget.
+  virtual aura::Window* GetToplevelWindow();
+
  private:
   friend class DelegatedFrameHostClientAura;
   friend class InputMethodAuraTestBase;