Merge "Adding differnet PageFragment samples to ShowcaseApp." into nyc-dev
am: 408d87e161

* commit '408d87e1610b9f7d2528260d9645a040fa231a13':
  Adding differnet PageFragment samples to ShowcaseApp.

Change-Id: I357fd1c248dcc7bc5c952789f6e86b9410095ad6