Merge "Move MultipathPolicyTracker back to framework" am: a2c355cc18 am: 8192596775

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1519959

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I02cbac11d169699f03c990f3be18d30748ca298b