[automerger skipped] Camera: Add new hidden API for camera open/close callback am: e375ee8f -s ours am: dd6b0c0c -s ours am: ca3bf535 -s ours am: 6ab34fbe -s ours am: 88cc767d -s ours am: d679207b -s ours

am skip reason: Change-Id I04cae782d96f0e32be8ef588dcd328f84b32887a with SHA-1 e375ee8f is in history

Change-Id: I8c7f7320909e73aca1834159a70730dae79ca1da