In content profile – full screen mode toolbar arrow icon needs to change...

... to indicate the action now has changed (to exit full screen)

![screen shot 2014-01-20 at 18 08 53](https://f.cloud.github.com/assets/1489257/1956866/ee150fbe-81fe-11e3-896d-d73623a2a93f.png)

When in full screen can we change the icon to this one?
![screen shot 2014-01-20 at 18 18 29](https://f.cloud.github.com/assets/1489257/1956890/4b499088-81ff-11e3-82b9-b6f8ebd1ce05.png)