Converted remoting.Error from an enum to a class

remoting/webapp/crd/js/host_installer.js

 // 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.
 
 /**
  * @fileoverview
  *
  * HostInstaller allows the caller to download the host binary and monitor the
  * install progress of the host by pinging the host periodically via native
  * messaging.
@@ skipping 88 matching lines @@
 };
 
 /**
  * @throws {Error}  Throws if there is no matching host binary for the current
  *     platform.
  */
 remoting.HostInstaller.prototype.download = function() {
   var hostPackageUrl = HOST_DOWNLOAD_URLS[navigator.platform];
   if (hostPackageUrl === undefined) {
     console.error("Tried to install host on " + navigator.platform);
-    throw new Error(remoting.Error.UNEXPECTED);
+    throw new Error(remoting.Error.unexpected());
   }
 
   // Start downloading the package.
   if (base.isAppsV2()) {
     // TODO(jamiewalch): Use chrome.downloads when it is available to
     // apps v2 (http://crbug.com/174046)
     window.open(hostPackageUrl);
   } else {
     window.location = hostPackageUrl;
   }
@@ skipping 45 matching lines @@
  */
 remoting.HostInstaller.prototype.cancel = function() {
   if (this.checkInstallIntervalId_ !== null) {
     window.clearInterval(this.checkInstallIntervalId_);
     this.checkInstallIntervalId_ = null;
   }
   this.downloadAndWaitForInstallPromise_ = null;
 };
 
 })();