Merge changes from topic "fix-volume-slider-during-phone-call" into tm-qpr-dev...

Merge changes from topic "fix-volume-slider-during-phone-call" into tm-qpr-dev am: 270620a6 am: 31743714 am: daec433d am: d7b98214

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/21701416



Change-Id: Ic08aa9c0b562237e6d31c3d010919464e548ae90
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>