Merge "Add NetworkRequest.Builder creating from an existing instance" am: 074c7d7537 am: f5c555f8b1

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1649294

Change-Id: I96516eb0d976d6e6250d2e96c316c560bfa21ab5
tree: 4327841677d73d02eefebf4d1317754e010d55e3
  1. framework/
  2. service/
  3. OWNERS
  4. TEST_MAPPING