Merge "Introduce SignalStrengthUpdateRequest to customize signal update request" am: 775a1db2c2 am: b581010b53

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1532958

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I32e98901cc44b5bda2b369020ca1381a1e0b5d2a