Merge "Wait for camera extensions service during initialization" into...

Merge "Wait for camera extensions service during initialization" into sc-qpr1-dev am: 2f68a663 am: 7544e779 am: 2a1a67dd

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15838336

Change-Id: Icb5dc37117d89f2ab248e8d7cd2de4d81529bb9c