tree a41b58a6210a135617de814570bfb830b730510b
parent fa255f6ead7097acba8400998c47685cc3defc67
author Robert Carr <racarr@google.com> 1461787185 -0700
committer Robert Carr <racarr@google.com> 1461787185 -0700

Fix crash when docking.

ViewRootImpl may be null at this point if
we didn't preserve. Sorry about the churn.

Bug: 28413589
Change-Id: Iebfd819490252b52332d94ccefbddfae160087cf