When a remote candidate is added, update all prflx candidates.

Previously they were only being updated for connections using the
most current "generation" of ports. This results in the older-
generation prflx candidate pair being prioritized above newer-
generation candidate pairs.

Review-Url: https://codereview.webrtc.org/2087713002
Cr-Original-Commit-Position: refs/heads/master@{#13245}
Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: 0af180b1aea1c8a0c696b16c5cc6045ed0370fc4
2 files changed