Converted remoting.Error from an enum to a class

remoting/webapp/crd/js/host_list.js

Index: remoting/webapp/crd/js/host_list.js
diff --git a/remoting/webapp/crd/js/host_list.js b/remoting/webapp/crd/js/host_list.js
index 4221115d3e33e8c1cb040800b29e43b435eddef6..307c0afce1276edf0cbdce04c40136b3ec668ebf 100644
--- a/remoting/webapp/crd/js/host_list.js
+++ b/remoting/webapp/crd/js/host_list.js
@@ -67,10 +67,10 @@ remoting.HostList = function(table, noHosts, errorMsg, errorButton,
    */
   this.hosts_ = [];
   /**
-   * @type {string}
+   * @type {!remoting.Error}
    * @private
    */
-  this.lastError_ = '';
+  this.lastError_ = remoting.Error.NONE;
   /**
    * @type {remoting.Host?}
    * @private
@@ -167,7 +167,7 @@ remoting.HostList.prototype.refresh = function(onDone) {
   this.loadingIndicator_.classList.add('loading');
   /** @type {remoting.HostList} */
   var that = this;
-  /** @param {remoting.Error} error */
+  /** @param {!remoting.Error} error */
   var onError = function(error) {
     that.lastError_ = error;
     onDone(false);
@@ -187,12 +187,12 @@ remoting.HostList.prototype.refresh = function(onDone) {
  * @private
  */
 remoting.HostList.prototype.onHostListResponse_ = function(onDone, hosts) {
-  this.lastError_ = '';
+  this.lastError_ = remoting.Error.NONE;
   this.hosts_ = hosts;
   this.sortHosts_();
   this.save_();
   this.loadingIndicator_.classList.remove('loading');
-  onDone(this.lastError_ == '');
+  onDone(true);
 };
 
 /**
@@ -242,8 +242,8 @@ remoting.HostList.prototype.display = function() {
   this.noHosts_.hidden = !noHostsRegistered;
 
   if (this.lastError_ != '') {
-    l10n.localizeElementFromTag(this.errorMsg_, this.lastError_);
-    if (this.lastError_ == remoting.Error.AUTHENTICATION_FAILED) {
+    l10n.localizeElementFromTag(this.errorMsg_, this.lastError_.tag);
+    if (this.lastError_.tag == remoting.Error.Tag.AUTHENTICATION_FAILED) {
       l10n.localizeElementFromTag(this.errorButton_,
                                   /*i18n-content*/'SIGN_IN_BUTTON');
     } else {
@@ -481,7 +481,7 @@ remoting.HostList.prototype.onLocalHostStarted = function(
  * @private
  */
 remoting.HostList.prototype.onErrorClick_ = function() {
-  if (this.lastError_ == remoting.Error.AUTHENTICATION_FAILED) {
+  if (this.lastError_.tag == remoting.Error.Tag.AUTHENTICATION_FAILED) {
     remoting.handleAuthFailureAndRelaunch();
   } else {
     this.refresh(remoting.updateLocalHostState);