This means that users of the struct no longer has to include socket.h.
Bug: webrtc:9586
Change-Id: I09d77d0b4c3a359d2ae4587a48dfc7540a8969e4
Reviewed-on: https://webrtc-review.googlesource.com/c/105105
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Reviewed-by: Björn Terelius <terelius@webrtc.org>
Commit-Queue: Sebastian Jansson <srte@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#25168}
