Merge "Support multi-window handwriting without focus requirement on down"...

Merge "Support multi-window handwriting without focus requirement on down" into tm-dev am: 003535dd am: a8459f56 am: 423b1c16 am: 8add1f68

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



Change-Id: I5835dae652ff10855272a885c751fadae6657d96
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>