Merge "Add a permission for CDM apps to start FGS from the background (2nd...

Merge "Add a permission for CDM apps to start FGS from the background (2nd try)" into sc-dev am: c6850e0a

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/14607397

Change-Id: I9470710c8c71f4c2df4e6b0a624ef75c3a69ccd1