DO NOT MERGE: Implement metered tracking for NetworkStats summary queries. am: 963e8ddf6d  -s ours am: 3f5785260e  -s ours am: aa75afd589
am: 9b8712a3a0  -s ours

Change-Id: I8d502d83e00fdc1cb295b32c557ab253f4b5c091