Mark two unfinished APIs as "DO NOT USE".

The two APIs at this point are not well defined and implemented due to
design changes after they were introduced. Marking them as DO NOT USE
until further re-define or clean up.

Test: build
Bug: 135222940
Change-Id: I3f06040fdda25c7aa27be45cd90177136f7e996f
Merged-In: I3f06040fdda25c7aa27be45cd90177136f7e996f
1 file changed