[automerger skipped] Revert "Revert "Expose uids related APIs in NetworkRequest and N..." am: 8d81c8d76b -s ours am: 9991401b9d -s ours

am skip reason: skip tag Change-Id I107c329d4d7130d488772166eae8b5e7aaa2ff04 with SHA-1 f379ceec8e is already in history

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1646848

Change-Id: Iecaae6936535a5c00d1a895c1410d2f0e5531261