Merge changes from topics "media_metrics_network", "media_metrics_pb_metrics", "media_metrics_track_change" into sc-dev am: 0fc89d96 am: 57f10296

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/13422511

Change-Id: I60f101f1a8af0c8c69cecca9e2df1ba44d0680b6