Merge "Cleaning up NetworkStatsManager." into nyc-dev am: c45f0aea71
am: f49cbec84c

* commit 'f49cbec84c1e2aa21b33d54ae97c54ed9c71bb32':
  Cleaning up NetworkStatsManager.

Change-Id: I0fd280e158eb3cfeb0b4f6066cc890439cffa02c