Merge "[Ongoing Call Chip] Ensure the chip is at least 48x48dp for accessibility." into sc-dev am: b8f98cfd am: 72cf49f2

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/14517587

Change-Id: Ic0e19e5e77ff13ec7b566fa733e8e4ceb38ee116