[automerger skipped] add API to get hash descriptor am: b510d2bf am:...
[automerger skipped] add API to get hash descriptor am: b510d2bf am: a17c2436 -s ours am: 7478a48a -s ours
am skip reason: Change-Id I92e32f61a265671ae0940c44147391f73776e66a with SHA-1 a90bfdd8 is in history
Change-Id: Ibb5de3e40e27dd582a25d065bb8dac416d34e946