Merge "Use WakeupMesage for delayed events in VcnGatewayConnection." am: b244bfa4d6

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1574005

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I4ff4e8c5b7ec0cf8cf32cdb9f9728fe53c7a7f28