Merge "resolve merge conflicts of 19ec6b7 to nyc-dev" into nyc-dev
am: 4abb8c0

* commit '4abb8c027976115afd6b38615412e185fa7eec7a':
  Allow back presses to work in FragmentActivity

Change-Id: Ia55c3a32dcf67adbce0753fe3757d77768795bc3