Merge "Volume: Hide dialog when motion cancelled, as well as when finished."...

Merge "Volume: Hide dialog when motion cancelled, as well as when finished." into tm-qpr-dev am: f597a6c3

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/21940803



Change-Id: I31fe4099eb610d423c99237f49242479349e8232
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>