Fixes issue with accelerators when a menu is open

ui/aura/client/dispatcher_client.h

Index: ui/aura/client/dispatcher_client.h
diff --git a/ui/aura/client/dispatcher_client.h b/ui/aura/client/dispatcher_client.h
new file mode 100644
index 0000000000000000000000000000000000000000..099e370a0b0ca77eeb98d2481583d9591fa4602f
--- /dev/null
+++ b/ui/aura/client/dispatcher_client.h
@@ -0,0 +1,29 @@
+// Copyright (c) 2012 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_AURA_CLIENT_DISPATCHER_CLIENT_H_
+#define UI_AURA_CLIENT_DISPATCHER_CLIENT_H_
+#pragma once
+
+#include "ui/aura/aura_export.h"
+#include "base/message_loop.h"
+
+namespace aura {
+
+namespace client {
+
+// An interface implemented by an object which handles nested dispatchers.
+class AURA_EXPORT DispatcherClient {
+ public:
+  virtual void RunWithDispatcher(MessageLoop::Dispatcher* dispatcher,
+                                 bool nestable_tasks_allowed) = 0;
+};
+
+AURA_EXPORT void SetDispatcherClient(DispatcherClient* client);
+AURA_EXPORT DispatcherClient* GetDispatcherClient();
+
+}  // namespace client
+}  // namespace aura
+
+#endif  // UI_AURA_CLIENT_DISPATCHER_CLIENT_H_