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

remoting/webapp/app_remoting/js/ar_main.js

Index: remoting/webapp/app_remoting/js/ar_main.js
diff --git a/remoting/webapp/app_remoting/js/ar_main.js b/remoting/webapp/app_remoting/js/ar_main.js
new file mode 100644
index 0000000000000000000000000000000000000000..2efe129e03ce323801c0e9814573cfe78edae02f
--- /dev/null
+++ b/remoting/webapp/app_remoting/js/ar_main.js
@@ -0,0 +1,18 @@
+// 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.
+
+'use strict';
+
+/** @suppress {duplicate} */
+var remoting = remoting || {};
+
+/**
+ * Entry point ('load' handler) for App Remoting webapp.
+ */
+remoting.startAppRemoting = function() {
+  remoting.app = new remoting.AppRemoting(remoting.app_capabilities());
+  remoting.app.start();
+};
+
+window.addEventListener('load', remoting.startAppRemoting, false);