Call onLauncherTransitionPrepare() and End() from pinch.
am: f898b970cc

* commit 'f898b970cc9130d629d4bc969222aaa96a8a013a':
  Call onLauncherTransitionPrepare() and End() from pinch.

Change-Id: If4d6b6b7eb733f638c541bbb3971aac1c0a07b4e