Merge "Do not add duplicates to mWaitingVisibleActivities" into nyc-dev
am: 697a3334

* commit '697a3334854da5c2c3830f0489a0e7e4c646a7fb':
  Do not add duplicates to mWaitingVisibleActivities

Change-Id: I1ba9a354cffea15b5207a38d2b3f8b8c5359b413