commit 6c286befa31480924cf1edd600b51d8f732f373c
author Evan Rosky <erosky@google.com> Wed Apr 19 17:23:32 2017 -0700
committer Evan Rosky <erosky@google.com> Wed Apr 26 12:50:58 2017 -0700
tree 94189a43cc8bf5afd6b3689bba367daa7f9ad87f
parent 2be0a532bf485988aba1b278f070259d9568d80a

Only save focus in keyboard navigation clusters when appropriate

 - tabbing forward/backward should not save cluster focus. If
   focus leaves a cluster due to normal forward/backward navigation
   the cluster focus is cleared.
 - directional arrows or cluster jumps (meta+tab) will save focus
   in the cluster so that cluster-jumping back will restore it.

Also fixed a couple small bugs: focusable viewgroups wouldn't save
properly, focusIncluster wasn't cleared properly.

Bug: 35274351
Test: Added CTS test for this behavior.
Change-Id: Ie86218d70b0fc3aa1a709e613a2761a65ab12500