Merge "Simplify trackpad multi-finger gesture recognition logic for back...

Merge "Simplify trackpad multi-finger gesture recognition logic for back notification shade" into udc-qpr-dev am: f6e45211

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23451434



Change-Id: Ia5ca8a2faa4d938dda8118e205d8c76ef92d0cf7
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>