GitLab

Fix QUIC connection migration to cancel migrate back to default if an earlier migration has brought the session to the default network.

This change also converts obsolete V1 tests for V2, adding regression test coverage.

Bug: 818259, 843299
Change-Id: I8abfdb9af15af132efab62686fb014502e641198
Reviewed-on: https://chromium-review.googlesource.com/1103222
Commit-Queue: Zhongyi Shi <zhongyi@chromium.org>
Reviewed-by: Ryan Hamilton <rch@chromium.org>
Cr-Commit-Position: refs/heads/master@{#568117}