Merge "Destroy saved surfaces if one of the last visible windows gets removed"...
Merge "Destroy saved surfaces if one of the last visible windows gets removed" into nyc-dev am: 15818e11 am: 51cc0f48
am: 29f0dc25
* commit '29f0dc25':
Destroy saved surfaces if one of the last visible windows gets removed
Change-Id: I2bceaa55d82c5dc829aa653077ab03171d5ea83a