Merge "[FUI09] Expose NetworkStateSnapshot as system API" am: 4dd42cdd5f am: 8203ac16dc am: 343ddc51b9

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1536708

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I41be29daeba58378ab374c346684a3d205f0d7c9