This reverts commit 14f8aba9967ac2f1789ede12ff66107962757fb5.
Reason for revert: breaking internal tests
Original change's description:
> Refactor the regathering of candidates in P2PTransportChannel.
>
> The functionality of regathering candidates is refactored to a separate
> regathering controller owned by P2PTransportChannel. This refactoring
> is part of a long-term plan to restructure a modularied
> P2PTransportChannel and it would also benefit the addition of autonomous
> regathering of candidates that is proactive to the ICE states in the
> near future.
>
> Bug: None
> Change-Id: I74cea974ea628430c77b5d51b7c9179ddffc690d
> Reviewed-on: https://webrtc-review.googlesource.com/75820
> Commit-Queue: Qingsi Wang <qingsi@google.com>
> Reviewed-by: Taylor Brandstetter <deadbeef@webrtc.org>
> Cr-Commit-Position: refs/heads/master@{#23588}
TBR=deadbeef@webrtc.org,pthatcher@webrtc.org,qingsi@google.com
Change-Id: I8b08351c9a3fcf89e2a25ed2c668c335cbd2d2d0
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: None
Reviewed-on: https://webrtc-review.googlesource.com/83300
Reviewed-by: Qingsi Wang <qingsi@webrtc.org>
Commit-Queue: Qingsi Wang <qingsi@google.com>
Cr-Commit-Position: refs/heads/master@{#23592}
1f4d7a2848