[automerger skipped] Expose uids related APIs in NetworkRequest and NetworkCapabilities am: 31d7527d -s ours am: ba7a1d32 -s ours am: 4f137107 -s ours am: 348249b8 -s ours

am skip reason: Merged-In I107c329d4d7130d488772166eae8b5e7aaa2ff04 with SHA-1 8f2f98f8 is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/13946380

Change-Id: I6115a98d22f93e716e2c1d78d291e75dbe1ad128