DO NOT MERGE Fixes in comments for NetworkEvent, DnsEvent and ConnectEvent

Test: the APIs will be tested by CTS when unhidden
Bug: 29748723

(cherry picked from commit da9d3ad3ac40555cd9e491c864bedf3c24f6289c)

Change-Id: Iaff05eb6d4a2fd12e0271c703d694ecfc0dc9a17
3 files changed