Merge "Allow explicitly setting the camera component launched by double-press...

Merge "Allow explicitly setting the camera component launched by double-press power." into sc-dev am: 4aa344a0

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/13978351

Change-Id: I3ae897b4b76fa6a9579f85f13f070486ea1d0099