Bug 15470128
Bug 15470558
Wait for shared element destinations to be complete
before sending it to the calling activity.
Don't allow layout between setting final destination
and the transition values capture.
Use snapshots to hold the final position while waiting
for the called Activity to take the shared element.
Fixed problem with exiting views sometimes disappearing
when exiting.
Change-Id: Ibc655f7bb9e8dd6e8a15778c96931e3d845cc15c
67d924341a