Update Chromoting to use /third_party/closure_compiler.

remoting/webapp/crd/js/host_screen.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.
 
 /**
  * @fileoverview
  * Functions related to the 'host screen' for Chromoting.
  */
 
 'use strict';
@@ skipping 74 matching lines @@
  * @private
  */
 remoting.tryShareWithToken_ = function(hostFacade, token) {
   lastShareWasCancelled_ = false;
   onNatTraversalPolicyChanged_(true);  // Hide warning by default.
   remoting.setMode(remoting.AppMode.HOST_WAITING_FOR_CODE);
   document.getElementById('cancel-share-button').disabled = false;
   disableTimeoutCountdown_();
 
   remoting.hostSession = new remoting.HostSession();
-  var email = /** @type {string} */remoting.identity.getCachedEmail();
+  var email = /** @type {string} */ (remoting.identity.getCachedEmail());
   remoting.hostSession.connect(
       hostFacade, email, token, onHostStateChanged_,
       onNatTraversalPolicyChanged_, logDebugInfo_, it2meConnectFailed_);
 };
 
 /**
  * Callback for the host plugin to notify the web app of state changes.
  * @param {remoting.HostSession.State} state The new state of the plugin.
  * @return {void} Nothing.
  * @private
@@ skipping 110 matching lines @@
  * Cancel an active or pending it2me share operation.
  *
  * @return {void} Nothing.
  */
 remoting.cancelShare = function() {
   document.getElementById('cancel-share-button').disabled = true;
   console.log('Canceling share...');
   remoting.lastShareWasCancelled = true;
   try {
     remoting.hostSession.disconnect();
-  } catch (error) {
-    // Hack to force JSCompiler type-safety.
-    var errorTyped = /** @type {{description: string}} */ error;
-    console.error('Error disconnecting: ' + errorTyped.description +
+  } catch (/** @type {*} */ error) {
+    console.error('Error disconnecting: ' + error +
                   '. The host probably crashed.');
     // TODO(jamiewalch): Clean this up. We should have a class representing
     // the host plugin, like we do for the client, which should handle crash
     // reporting and it should use a more detailed error message than the
     // default 'generic' one. See crbug.com/94624
     showShareError_(remoting.Error.UNEXPECTED);
   }
   disableTimeoutCountdown_();
 };
 
@@ skipping 94 matching lines @@
  * @private
  */
 function onNatTraversalPolicyChanged_(enabled) {
   var natBox = document.getElementById('nat-box');
   if (enabled) {
     natBox.classList.add('traversal-enabled');
   } else {
     natBox.classList.remove('traversal-enabled');
   }
 }