DO NOT MERGE:Improve check for activity on top after launch.

BUG: 30875754
Fixes: 30868243

Change-Id: Iad3d6ce80fcf24281e98251799c23abc9b83b52d
Change-Id: I8b7624e35caef107743d6 1f312e220f8bc21b9b8
1 file changed