Merge "[Ongoing Call Chip] Call Chronometer#stop to prevent leaks." into...

Merge "[Ongoing Call Chip] Call Chronometer#stop to prevent leaks." into sc-dev am: 8a57c76a am: 0c86fa28 am: 03b4106c

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15084010

Change-Id: I291b32a12f6e102cf12aa5665a0921d749c8b610