Enable keyboard accelerators while a menu is open

ui/views/controls/menu/menu_message_loop_aura.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef UI_VIEWS_CONTROLS_MENU_MENU_MESSAGE_LOOP_AURA_H_
 #define UI_VIEWS_CONTROLS_MENU_MENU_MESSAGE_LOOP_AURA_H_
 
+#include <map>
+#include <stack>
+
 #include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
+#include "ui/views/controls/menu/menu_event_filter.h"
 #include "ui/views/controls/menu/menu_message_loop.h"
 
 namespace base {
 class MessagePumpDispatcher;
 }
 
 namespace ui {
 class ScopedEventDispatcher;
 }
 
@@ skipping 12 matching lines @@
   void RepostEventToWindow(const ui::LocatedEvent& event,
                            gfx::NativeWindow window,
                            const gfx::Point& screen_loc) override;
   void ClearOwner() override;
 
  private:
   // Owner of child windows.
   // WARNING: this may be NULL.
   Widget* owner_;
 
+  scoped_ptr<MenuEventFilter> menu_event_filter_;
+
+  // Maps the IDs of the created nested RunLoops to whether their corresponding
+  // QuitNow() functions have been called or not. This is needed to avoid
+  // calling QuitNow() multiple times while the same Runloop is running until it
+  // actually exits.
+  using RunLoopId = int;
+  std::stack<RunLoopId> run_loop_ids_stack_;
+  std::map<RunLoopId, bool> run_loops_status_;
+
   base::Closure message_loop_quit_;
 
   DISALLOW_COPY_AND_ASSIGN(MenuMessageLoopAura);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_CONTROLS_MENU_MENU_MESSAGE_LOOP_AURA_H_