Merge "Camera: Add OWNERS file for CameraExtensionsProxy" am: 20a347f172 am: b568f02c04

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1546312

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I08b247ce6385a9c6ab29bb432825bf8b1191a272