Merge "Delete TouchState::source" into udc-qpr-dev am: 5cf5ea193c am: b5195e3153

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/native/+/23059552

Change-Id: Idf39dcd375282c098186cd5c5f925882c2a89600
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>