Merge "DO NOT MERGE ANYWHERE Revert "Using Activity#setTitle to have TalkBack announce root traversal."" into nyc-mr2-dev am: 52a9e0e1dd  -s ours
am: 0ca78d3f85  -s ours

Change-Id: I69db4438267a2f8d50d8f3fbde102d1c878a0520