Merge "Improve drag divider dismiss transition." into udc-dev am: 41464c2f...

Merge "Improve drag divider dismiss transition." into udc-dev am: 41464c2f am: c71f191f am: d729261c am: 12cb7fc9

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23345341



Change-Id: I24f83aaaca49bd9cfcd7ab74136397d562031b36
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>