tree bde016490778f53f1ed6d307bd20e35e0971ff7f
parent 2df4fb0e4ec2cbcf0339269e894eb435c353f44a
author chaviw <chaviw@google.com> 1542327987 -0800
committer chaviw <chaviw@google.com> 1543269028 -0800

Fixes for parentless layers

1. When a layer is removed, it needs to latch a buffer before the buffer
can be released.
2. If a layer is removed from current state, it needs to get re-added
back to current state when it gets reparented to a layer that is not
removed from current state
3. If a layer is added as a child to a layer that has been removed from
current state, the layer adding needs to succeed, but the layer needs to
be automatically set as removed from current state.

Bug: 111297488
Test: Test with updated ActivityView that has a SurfaceControl that has
no reference in SF tree
Change-Id: I8b723666964c61aaf7119b60ac256d19f85732b0