Propagate surface type and owner through to SurfaceFlinger.

This allows VrWindowManager to identify things like permission
dialogues in the list of SurfaceFlinger layers that show up while a
VR application is running and display them without leaving VR mode.

Bug: 30984984
Test: Run VR application, request permission at runtime, observe and
  accept permission in VrWindowManager without leaving VR mode.

Change-Id: I347313b5fcd08dea3cd6fddfaeb15640938e3a87