Bind the workspace synchronously if started on -1 screen.

Previously, LoaderTask would be run asynchronously to bind
the workspace when started on -1 which would cause the user's
wallpaper to briefly flash when rotating the device on -1.

Bug: 11802691
Change-Id: I3a1a7a32fa28a81e041a283a93d808d5a8884133
2 files changed