Alan Viverette b46ba3b2b0 Avoid potential re-entry as a result of child mutation
Don't set the callback until we're all done making changes.

Bug: 30409766
Change-Id: Ia1560692a83ecb2c50f5e77fa4d1e8155a78a204
2016-07-27 10:23:35 -04:00
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