loginDialog: Implement cancel()

The screen shield expects a cancel() method on the unlockDialog
implementation, but LoginDialog does not provide it currently.

https://bugzilla.gnome.org/show_bug.cgi?id=719378

diff --git a/js/gdm/loginDialog.js b/js/gdm/loginDialog.js
index 67b35ade34396281911e5d4280d7308880c4622a..4389fe7ecdfd964baf20812fede31ce96334148b 100644 (file)
--- a/js/gdm/loginDialog.js
+++ b/js/gdm/loginDialog.js
@@ -885,6 +885,10 @@ const LoginDialog = new Lang.Class({
         Main.ctrlAltTabManager.removeGroup(this.dialogLayout);
     },
 
+    cancel: function() {
+        this._authPrompt.cancel();
+    },
+
     addCharacter: function(unichar) {
         this._authPrompt.addCharacter(unichar);
     },