As far as I know there's no way right now. All you can do is restrict background usage, aka data usage when the app isn't your active task.
But restricting background usage would also stop apps, like News and Weather, from updating their Live Tiles right? I wouldn't want that of course.
Originally Posted by
colinkiama Disable mobile data when using other apps. Enable for the apps that you need.
Yep, that is a solution. However it will be annoying to disable mobile data and then re-enable it every time I'll use IE or WhatsApp.