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In practice, it means:
 - https://www.example.com => example.com
 - http://www.example.com => example.com
 - https://m.example.com => m.example.com

This is implemented at the Media Session level which should affect all usage of
it.

Bug: 1011900
Change-Id: Id3007daebe200ed6b4ccf3d574e5b15ba8424903
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1846658Reviewed-by: Tommy Steimel <steimel@chromium.org>
Commit-Queue: Mounir Lamouri <mlamouri@chromium.org>
Cr-Commit-Position: refs/heads/master@{#704015}