James Cook 761a4b3335 Change UndoManager mOwners from HashMap to ArrayMap
The number of undo operation owners is small (and usually one),
so save memory by switching to ArrayMap.

Bug: 19332904
Change-Id: Ic32cd49c292db2eaab1739cea8e8e518e68bd826
2015-02-23 16:20:16 -08:00
..
2015-02-20 19:30:40 +00:00