Merge "Camera: Allow synthetic extension metadata" into tm-dev am: eb177cd5

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/18801658



Change-Id: I8ddd4eb83fbb0e2c7bdfb2a3c5262445290866ed
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>