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}