Add the vibrate attribute to the Notification object

Source/modules/notifications/Notification.idl

Index: Source/modules/notifications/Notification.idl
diff --git a/Source/modules/notifications/Notification.idl b/Source/modules/notifications/Notification.idl
index e684d228a338e83e0478ab345aef6b15b0482777..851be63b519aad860d642d00c2dc522dcf2fd997 100644
--- a/Source/modules/notifications/Notification.idl
+++ b/Source/modules/notifications/Notification.idl
@@ -55,6 +55,10 @@
     readonly attribute DOMString body;
     readonly attribute DOMString tag;
     readonly attribute DOMString icon;
+
+    // FIXME: The Union type VibrationPattern is not supported in NavigatorVibration.
+    //        If VibrationPattern is supported, we need to change with this.
+    [RuntimeEnabled=NotificationExperimental] readonly attribute (unsigned long or sequence<unsigned long>) vibrate;

[Peter Beverloo, 2015/04/07 11:37:31]

See my other comment - let's not maintain the type of argument passed throughout
the stack, at least until a decision has been made on how to support this in the
specification.

[Sanghyun Park, 2015/04/08 08:00:03]

Done.

     readonly attribute boolean silent;
     [RuntimeEnabled=NotificationExperimental, CallWith=ScriptState] readonly attribute any data;