[Chromoting] Move app-specific code out of remoting.js

remoting/webapp/crd/js/host_setup_dialog.js

 // Copyright (c) 2012 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 || {};
 
 /**
@@ skipping 147 matching lines @@
 
   /**
    * @param {remoting.HostController.State} state
    */
   var onState = function(state) {
     // Although we don't need an access token in order to start the host,
     // using callWithToken here ensures consistent error handling in the
     // case where the refresh token is invalid.
     remoting.identity.getToken().then(
         that.showForStartWithToken_.bind(that, state),
-        remoting.Error.handler(remoting.showErrorMessage));
+        remoting.Error.handler(remoting.app.onAuthError.bind(remoting.app)));
   };
 
   this.hostController_.getLocalHostState(onState);
 };
 
 /**
  * @param {remoting.HostController.State} state The current state of the local
  *     host.
  * @param {string} token The OAuth2 token.
  * @private
@@ skipping 383 matching lines @@
     var c = pin.charAt(i);
     if ((c < '0') || (c > '9')) {
       return false;
     }
   }
   return true;
 };
 
 /** @type {remoting.HostSetupDialog} */
 remoting.hostSetupDialog = null;