Add dummny menu implementation for Windows.

browser/api/atom_api_menu_win.cc

@@ -0,0 +1,28 @@
+// Copyright (c) 2013 GitHub, Inc. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "browser/api/atom_api_menu_win.h"
+
+namespace atom {
+
+namespace api {
+
+MenuWin::MenuWin(v8::Handle<v8::Object> wrapper)
+    : Menu(wrapper) {
+}
+
+MenuWin::~MenuWin() {
+}
+
+void MenuWin::Popup(NativeWindow* native_window) {
+}
+
+// static
+Menu* Menu::Create(v8::Handle<v8::Object> wrapper) {
+  return new MenuWin(wrapper);
+}
+
+}  // namespace api
+
+}  // namespace atom