Converted remoting.Error from an enum to a class

remoting/webapp/crd/js/host_setup_dialog.js

Index: remoting/webapp/crd/js/host_setup_dialog.js
diff --git a/remoting/webapp/crd/js/host_setup_dialog.js b/remoting/webapp/crd/js/host_setup_dialog.js
index dbf844a307f670b8f6a356a5f1e7717239198f39..bfa9430f863f0ebbf0f9aa57f4aa17cbafb9f146 100644
--- a/remoting/webapp/crd/js/host_setup_dialog.js
+++ b/remoting/webapp/crd/js/host_setup_dialog.js
@@ -69,13 +69,13 @@ remoting.HostSetupFlow.prototype.switchToNextStep = function() {
  * @param {!remoting.Error} error
  */
 remoting.HostSetupFlow.prototype.switchToErrorState = function(error) {
-  if (error.tag == remoting.Error.Tag.CANCELLED) {
+  if (error.hasTag(remoting.Error.Tag.CANCELLED)) {
     // Stop the setup flow if user rejected one of the actions.
     this.state_ = remoting.HostSetupFlow.State.NONE;
   } else {
     // Current step failed, so switch to corresponding error state.
     if (this.state_ == remoting.HostSetupFlow.State.STARTING_HOST) {
-      if (error.tag == remoting.Error.Tag.REGISTRATION_FAILED) {
+      if (error.hasTag(remoting.Error.Tag.REGISTRATION_FAILED)) {
         this.state_ = remoting.HostSetupFlow.State.REGISTRATION_FAILED;
       } else {
         this.state_ = remoting.HostSetupFlow.State.START_HOST_FAILED;