Merge "Update documentation outlining results during voice calls." into sc-dev...

Merge "Update documentation outlining results during voice calls." into sc-dev am: c2a780db am: 3b1639f8

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15128665

Change-Id: Ifcc3050df84452ec11c461505850a1163057d5c7