Merge "Move some constants from TrafficStatsConstants to NetworkStackConstants" am: b819104190 am: 82c7b482d2

Original change: https://android-review.googlesource.com/c/platform/frameworks/libs/net/+/1625962

Change-Id: I3c3f9eb94af4645e50975e656fde8f0c652777f8
tree: 73df5baf264c48cf44bec316ebaf9087ff206c28
  1. staticlibs/