tree 965b1fce537d98b1d786c349be4a2125a868b253
parent 4b6614e5762852e4495a991b5fc833a342f2cb36
author Chong Zhang <chz@google.com> 1466792586 -0700
committer Chong Zhang <chz@google.com> 1466793058 -0700

Do not load exit animation again if window is already animating

Transition can be started as soon as the entering app is drawn.
If the exiting app relayouts to invisible after transition started,
don't load the exit animation again.

bug: 29405575
Change-Id: I05ba4f733afb9426626db113be721a6bf888f093