Merge "Less lazy child FragmentManager creation" into nyc-dev am: 6437dac3d9
am: 3b981d026c

* commit '3b981d026c87caa9ac0958a9c30b6d1566e12543':
  Less lazy child FragmentManager creation

Change-Id: I7e6adf142e707027e41346c0d3f847a8a4d599d3