Per API review: String accessor was not needed (duplicate, semantics not accurate, trivial use-case). (cherry-pick of commit c76ccf3e7e673fb21f27ea8e7482021900b113cf) Bug: 31470256 Test: unit tests & integration (sl4a) testing. Change-Id: Id307702627afd8ee579b540d4c2f65359bf9a925