Merge "Adding differnet PageFragment samples to ShowcaseApp." into nyc-dev am: 408d87e161
am: 8069b168ee

* commit '8069b168eefcb6a83c850eeccdcb6f8e1f998dfc':
  Adding differnet PageFragment samples to ShowcaseApp.

Change-Id: Id12df727d2ee3838ffa5e571c7728e0ace4933f6