Merge "Camera: Add OWNERS file for CameraExtensionsProxy" am: 20a347f172 am: b568f02c04 am: ae0efd9ca5

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

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: Ic05e4bd5de9677df27c8b715426882fb0f9a086b