base

Change layout inner loop order for multi display.

The inner loop that ran over each display had a few problems:
- The Surface transaction was starting and stopping between each
display.
- The layout change bits were being applied globally so all
displays were layed out when only individual displays needed to be.
- Wallpaper and input actions were being applied each time through
the display loop rather than once only for the default display.

Change-Id: I924252bab28c426222a4bb73693accc4b21cecbe