views: Terminate the nested message-loop correctly.

ui/views/controls/menu/menu_controller.h

Index: ui/views/controls/menu/menu_controller.h
diff --git a/ui/views/controls/menu/menu_controller.h b/ui/views/controls/menu/menu_controller.h
index 5821eec5a312e746e1a99ac8a74f8eb8d1246255..910d3809f8276930c4e630f7cf2cfa84dedeabd1 100644
--- a/ui/views/controls/menu/menu_controller.h
+++ b/ui/views/controls/menu/menu_controller.h
@@ -150,6 +150,7 @@ class VIEWS_EXPORT MenuController : public WidgetObserver {
   friend class internal::MenuEventDispatcher;
   friend class internal::MenuMessagePumpDispatcher;
   friend class internal::MenuRunnerImpl;
+  friend class MenuControllerTest;
   friend class MenuHostRootView;
   friend class MenuItemView;
   friend class SubmenuView;
@@ -471,9 +472,12 @@ class VIEWS_EXPORT MenuController : public WidgetObserver {
   void SetActiveMouseView(View* view);
   View* GetActiveMouseView();
 
-  // Sets exit type.
+  // Sets exit type. Calling this can terminate the active nested message-loop.
   void SetExitType(ExitType type);
 
+  // Terminates the current nested message-loop.
+  void TerminateNestedMessageLoop();
+
   // Returns true if SetExitType() should quit the message loop.
   bool ShouldQuitNow() const;