Merge "Support handwriting delegation across different view trees" into udc-dev am: b79679f5

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/21476176



Change-Id: If03bb4c9a3781264e43043bae2c16d19d183fe7e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>