Merge "Revert "Revert "Suppress NewApi warnings for @SystemApi -> public APIs""" am: 52baac4749 am: 39aeb14387 am: 597df78644 am: 9d44573442

Original change: https://android-review.googlesource.com/c/platform/frameworks/libs/net/+/1928138

Change-Id: I4985813d3627bcc1a1d00861e44ef9b0e4749adb