* Add explicit keyword to conversion constructors, or add NOLINT(implicit) for implicit converters. Bug: 28341362 Test: build with WITH_TIDY=1 Change-Id: I0c7b90f9bb953a9f2e4f0fb2032fa65ac604b9ca Merged-In: I0c7b90f9bb953a9f2e4f0fb2032fa65ac604b9ca