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

remoting/webapp/base/js/plugin_settings.js

Index: remoting/webapp/base/js/plugin_settings.js
diff --git a/remoting/webapp/base/js/plugin_settings.js b/remoting/webapp/base/js/plugin_settings.js
index e57acca4ff2efd18e82bd92835926785e6ea9b93..a4b56d2dc0a48a8ba413b4b49e6c8fca3459f62a 100644
--- a/remoting/webapp/base/js/plugin_settings.js
+++ b/remoting/webapp/base/js/plugin_settings.js
@@ -49,6 +49,18 @@
 remoting.Settings.prototype.APP_REMOTING_API_BASE_URL =
     'APP_REMOTING_API_BASE_URL';
 
+/**
+ * Return this app's Application ID.
+ *
+ * This is a function rather than a constant because the build script may
+ * replace this string with code to calculate the app id dynamically.
+ *
+ * @return {string} The Application ID.
+ */
+remoting.Settings.prototype.getAppRemotingApplicationId = function() {
+  return 'APP_REMOTING_APPLICATION_ID';
+};
+
 /** @type {string} XMPP JID for the remoting directory server bot. */
 remoting.Settings.prototype.DIRECTORY_BOT_JID = 'DIRECTORY_BOT_JID';