Refactor menu controller to isolate aura dependency.

ui/views/controls/menu/display_change_listener_mac.cc

Index: ui/views/controls/menu/display_change_listener_mac.cc
diff --git a/ui/views/controls/menu/display_change_listener_mac.cc b/ui/views/controls/menu/display_change_listener_mac.cc
new file mode 100644
index 0000000000000000000000000000000000000000..979bd51154fe807175b4d83d60f03ac76057c673
--- /dev/null
+++ b/ui/views/controls/menu/display_change_listener_mac.cc
@@ -0,0 +1,16 @@
+// Copyright (c) 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.
+
+#include "ui/views/controls/menu/menu_runner.h"
+
+namespace views {
+namespace internal {
+
+// static
+DisplayChangeListener* DisplayChangeListener::Create(Widget*, MenuRunner*) {
+  return NULL;
+}
+
+}  // namespace internal
+}  // namespace views