Merge "Adding differnet PageFragment samples to ShowcaseApp." into nyc-dev am: 408d87e161
am: e1c198b1c1

* commit 'e1c198b1c1bd3d0ad05bea3cbeb1b97b66f4c7a5':
  Adding differnet PageFragment samples to ShowcaseApp.

Change-Id: I76f28738f2d66e5d5a617dfc8759ae38c58a06ef