[automerger skipped] An enum is initialized as zero if it doesn't have default value am: 8f9de735cc -s ours am: 73bb404643 -s ours

am skip reason: Merged-In I6cb67258cc4aacc41ae80c46ccee10a3cfe723f6 with SHA-1 4bdd8e91b2 is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/system/tools/aidl/+/15903225

Change-Id: Ic270c3522d5f150751e4915279531a8db85a3cbe