Add default lock wallpaper capability and API am: 5d99d47f39
am: 8d71edc83d

* commit '8d71edc83de3c695f27967dd3378306654b9953c':
  Add default lock wallpaper capability and API

Change-Id: I676d2ab9526f9e2e47f79a73cbb680673ded50f0