[webkitNotifications] check pageVisibility API when sending notification
[webkitNotifications] abstract out the Util.pageIsVisible method
[webkitNotifications] some CS style changes for createNotification
Merge remote-tracking branch 'upstream/master'
[webkitNotifications] fix a dumb syntax error
[webkitNotifications] fix misnamed function
Fix pageIsVisible logic
Merge pull request #99 from gkoo/master

Check page visibility api when sending webkitNotifications