Revert of [AppRemoting] Break out AppRemoting shared module (re-land).

remoting/webapp/base/js/app_capabilities.js

+// Copyright 2015 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.
+
+'use strict';
+
+/** @suppress {duplicate} */
+var remoting = remoting || {};
+
+/**
+ * Note that this needs to be a function because it gets expanded at
+ * compile-time into remoting.ClientSession.Capability enums and these
+ * are not guaranteed to be present yet when this file is loaded.
+ * @return {Array<remoting.ClientSession.Capability>}
+ */
+remoting.app_capabilities = function() {
+  return ['APPLICATION_CAPABILITIES'];
+}