p2p: Update for libchrome-242728.

BUG=none
TEST=builds and tests pass
CQ-DEPEND=I528fd1b8ed6737abee147500372fe1284956c741

Change-Id: Ief090efa90e20a03e6456dd50a1593ea30bb812d
Reviewed-on: https://chromium-review.googlesource.com/191440
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Commit-Queue: Daniel Erat <derat@chromium.org>
Tested-by: Daniel Erat <derat@chromium.org>
Reviewed-by: David Zeuthen <zeuthen@chromium.org>