GitLab

Attempt connection migration by calling OnPathDegrading if the path is
still degrading when a new network is connected.

Bug: 835444
Change-Id: I3e37d664019af21e7a61d9b49a0fb92d936e6141
Reviewed-on: https://chromium-review.googlesource.com/1026691
Commit-Queue: Zhongyi Shi <zhongyi@chromium.org>
Reviewed-by: Ryan Hamilton <rch@chromium.org>
Cr-Commit-Position: refs/heads/master@{#554859}