tree cc031aba592b2fec7a278651a5602a1f10a37b75
parent 49ffae5a105d94732398689f06a6399226ce777f
author Joshua Liebow-Feeser <joshlf@google.com> 1561006352 +0000
committer CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org> 1561006352 +0000

[netstack3] Use zx::Time instead of std::time::Instant for timers

- Previously, we used std::time::Instant because the core's
  EventDispatcher trait used that type in order to avoid a platform-
  specific dependency on zx::Time; this required some gymnastics,
  and meant that we had an open TODO to figure out how to convert
  from std::time::Instant to zx::Time
- Now that the EventDispatcher trait provides an abstraction for
  the instant at which a timer is scheduled, we can just use zx::Time
  directly without exposing that detail to the core, and thus avoid
  violating the core's platform-agnosticism requirement
- This also allows us to implement EventDispatcher::schedule_timeout_instant,
  which was previously a TODO for the reasons described above

NET-2367 #done

Change-Id: Ic40de7fbaed7ac1f1861cc60f3db14c8937cf743