Merge "Update Toast UI component according to UX reference spec" into tm-dev am: ddbdb179

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/17452646



Change-Id: I3a9c9b77708068875ae3d0ee4673937a2e99c047
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>