tree 00c1a633c54b33a445f8b498f11848ff03d07c0b
parent 931dc01ad7c2d3eb1de276a7174cd55928d463aa
author chaviw <chaviw@google.com> 1505778067 -0700
committer chaviw <chaviw@google.com> 1505933557 -0700

Re-parent invoked on child instead of on parent.

The function to re-parent an individual child is now invoked on
the child instead of the parent. This ensures the child ends up with
the last parent set if multiple reparent requests are made in the same
transaction.
This also allows adding a parent to a layer that didn't have one
previously.

Test: Transaction_test -> Reparent, ReparentToNoParent,
ReparentFromNoParent

Change-Id: Idab429eb2dca5a4ae1b020a5a7629d719dd4d995