Merge "Create "trusted chain" mechanism for AttributionSource" into sc-dev am: 1e1aef37 am: 7703ea8d am: f0b70130

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

Change-Id: I87b0c84e7a0cb53d60ec6b8ab11d2b6c1a2ca6b7