Merge "TouchExplorer: allow service to initiate touch exploration and there...

Merge "TouchExplorer: allow service to initiate touch exploration and there are no pointers on the screen" into tm-dev am: c7600cee am: 95ce440d am: ca7b6dde

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/17642884



Change-Id: I23f83718f0db260eb0e8bf48780dde35194d43fa
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>