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

remoting/webapp/app_remoting/js/ar_background.js

Index: remoting/webapp/app_remoting/js/ar_background.js
diff --git a/remoting/webapp/app_remoting/js/ar_background.js b/remoting/webapp/app_remoting/js/ar_background.js
index d9ea8e51ddd57e44335837cd2ae143f8a21ff5d2..4ee250768d2f5b94ed85a6213fa8b2ccb644cba0 100644
--- a/remoting/webapp/app_remoting/js/ar_background.js
+++ b/remoting/webapp/app_remoting/js/ar_background.js
@@ -55,10 +55,7 @@
     appWindow.onClosed.addListener(onClosed);
   };
 
-  // TODO(garykac) Add code to switch between dev and prod shared modules.
-  chrome.app.window.create(
-      '_modules/koejkfhmphamcgafjmkellhnekdkopod/main.html',
-      windowAttributes, onCreate);
+  chrome.app.window.create('main.html', windowAttributes, onCreate);
 };
 
 /** @param {Event} event */