Merge "Support multi-window handwriting without focus requirement on down" into tm-dev am: 003535ddbe

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/17982123

Change-Id: Ie8918154cf4563ff0240b835c60535e3083a8eb8
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>