Merge "Refactor how StatusBarPolicy knows if keyguard is visible." into nyc-dev am: bbd26bc023
am: 05f2a86b3d

* commit '05f2a86b3dab0872e5c318777b665b2435876d8c':
  Refactor how StatusBarPolicy knows if keyguard is visible.

Change-Id: I08f80e52a66e80e7a0db22a111bc2609cb4b1e33