... as opposed to strong references.
In case the calls between register and unregister aren't matched, we don't want to be leaking views.
I haven't seen any real eveidence of there being leaks, just a report. But this is preventative.
Created a "WeakSparseArray", which wraps SparseArray, and passes in a kind of WeakReference that has an id.
The references become unreachable, we use the id to remove the the entry from the SparseArray.
Test: Used the device for a bit with talkback on. CTSAccessibility*
Change-Id: I8d11727428f56fc06007232ae341d1409a11991f
Fix: 134506015
2e6efdefa6