Changes to plugin events to better match AnimatableClockView

Bug: 229771520
Test: Interface change, no test
Change-Id: Id25a9efc4bb2410f03634b8f8ab3ed301af07bf9
(cherry picked from commit 12e7465fe27a1ecdd0ee6bdf48e220cd14c34f2b)
Merged-In: Id25a9efc4bb2410f03634b8f8ab3ed301af07bf9
1 file changed