Merge "Create "trusted chain" mechanism for AttributionSource" into sc-dev am: 1e1aef37 am: 3b6857a4 am: 648ae204

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15123738

Change-Id: I536f785407bc946aa940c127623b786fdd1da0a6