Adam Barth 16328cc875 Add GlobalKey.registerSyncListener
This lets clients listen for when a widget with a given global key goes through
a sync operation. We'll need this for mimic to track its mimicable when it
moves around the tree.
2015-08-24 12:55:55 -07:00
..
2015-08-24 12:55:55 -07:00
2015-08-20 21:01:13 -07:00
2015-08-20 21:01:13 -07:00