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 e78da6c89b22146e060a8bbe3c7b3d15bf1fc3a5..158906e7a4c041a2decec93ab217906ffb031a35 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 InputMethodAuraTestBase;
   friend class RenderWidgetHostViewAuraCopyRequestTest;