Merge "SupportLeanbackshowcase: clean up preference fragment code" into nyc-dev am: 097514b34c
am: c428170e91

* commit 'c428170e9146d921f1560dd127931254b3955474':
  SupportLeanbackshowcase: clean up preference fragment code

Change-Id: I8b176344d55c4a85843946f0d2662d3f07d1105f