Static const objects can cause what's called a "static initialization
order fiasco". This CL removes the statically initialized network units
in favor of constexpr defined versions available via static functions.
Bug: webrtc:8415
Change-Id: Ib1b316ae007481c52a53b2d1bb0352a630a220e2
Reviewed-on: https://webrtc-review.googlesource.com/65164
Commit-Queue: Sebastian Jansson <srte@webrtc.org>
Reviewed-by: Björn Terelius <terelius@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#22670}