Merge "Use correct gravity for 3-button gesture insets" into udc-dev am: c3550fca

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22322430



Change-Id: Ie38c884713f128067a3b7cfa14634bddf08fd569
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>