Merge "Camera: Quit extension handler thread during release" am: 8aacfdb2

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/2555515



Change-Id: I5d0050df95e8feea7440e68f686f7afa3b2759a0
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>