Upstream partner request to add BC methods to core platform API.

This change adds methods and a field inadvertently missed in
http://r.android.com/954602 and http://ag/7278964

Bug: 129665886
Bug: 129440746
Test: m && flashall
Change-Id: I71fd435365ee8edfa1e577c3cf9fe3bc35709017
Merged-In: I71fd435365ee8edfa1e577c3cf9fe3bc35709017
(cherry picked from commit f2103d56817aefad8067d738e0904b941c71b9fe)