Add Application.Delegate.stop.

remoting/webapp/crd/js/desktop_remoting.js

Index: remoting/webapp/crd/js/desktop_remoting.js
diff --git a/remoting/webapp/crd/js/desktop_remoting.js b/remoting/webapp/crd/js/desktop_remoting.js
index 6eb06260103f703d92681c70e379de3864263f8d..94df8ff94914a1697fa00c38f3e334db6a1d8350 100644
--- a/remoting/webapp/crd/js/desktop_remoting.js
+++ b/remoting/webapp/crd/js/desktop_remoting.js
@@ -134,17 +134,19 @@ remoting.DesktopRemoting.prototype.start = function(connector, token) {
 };
 
 /**
+ * No cleanup required for desktop remoting.
+ */
+remoting.DesktopRemoting.prototype.stop = function() {
+};
+
+/**
  * Report an authentication error to the user. This is called in lieu of start()
  * if the user cannot be authenticated or if they decline the app permissions.
  *
  * @param {remoting.Error} error The failure reason.
  */
 remoting.DesktopRemoting.prototype.signInFailed = function(error) {
-  if (error == remoting.Error.CANCELLED) {
-    chrome.app.window.current().close();
-  } else {
-    remoting.showErrorMessage(error);
-  }
+  remoting.showErrorMessage(error);
 };
 
 /**