Merge "Merge "Track active AttributionSources, and finish chains on death" into sc-dev am: a4d18e76 am: e5a8428a" into sc-v2-dev-plus-aosp am: cfd2a330

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15312052

Change-Id: I1f8951cf4145b3a8b64c9b1c43006e7f1438673b