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 am: fb968542

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



Change-Id: Ib7a55ab34e75d9dfb4140e15897dbf534fcff562
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>