tree cc457dfecb21958ae8d77cb3732ffc673a350538
parent 0872c2455e896c9238014efb4d739c62a8103b74
author Jason Monk <jmonk@google.com> 1484144516 -0500
committer Jason Monk <jmonk@google.com> 1484667073 -0500

Move navigation bar logic to its own class

Start hacking away at PhoneStatusBar by trying to pull out
as much NavigationBar logic as possible.

Test: runtest systemui
Change-Id: I23b904428be31b91f0747fd60c9f6e0dd323eb44