Add a method to convert public NetworkStats to internal NetworkStats am: 4dd93d3b22

Original change: https://android-review.googlesource.com/c/platform/frameworks/libs/net/+/1942993

Change-Id: I505303503d35df3b10eaf4bece1f09585d4a18bd
tree: 63347fb26a24a617c50c81294e5c1277229dbf0b
  1. client-libs/
  2. common/
  3. .gitignore
  4. OWNERS
  5. PREUPLOAD.cfg
  6. TEST_MAPPING