Merge "[IT4.4] Host network activity related logic into a new class" am: 14cb00fd50 am: b2cf9573bd am: d386a2a2b9

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1534899

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I2a11342e5659222113955ab0d5b713aecac03707