am 3d6a2c0f: (-s ours) am 28ecf8da: Revert "Camera2: Selectively re-define master metadata symbols: DO NOT MERGE": DO NOT MERGE

# Via Android Git Automerger (1) and Igor Murashkin (1)
* commit '3d6a2c0f54646514fa6dce9fa41b074a39690212':
  Revert "Camera2: Selectively re-define master metadata symbols: DO NOT MERGE": DO NOT MERGE