Reland: Add omt-worker-fetch/external/wpt/referrer-policy

Reland of https://chromium-review.googlesource.com/1330903
with renaming due to crbug/906964.

Bug: 835717, 880027, 906964
Change-Id: I0eeca00cc7a0db2cb2efb16588b0cf52c14883f0
Reviewed-on: https://chromium-review.googlesource.com/c/1344434
Commit-Queue: Hiroki Nakagawa <nhiroki@chromium.org>
Reviewed-by: Hiroki Nakagawa <nhiroki@chromium.org>
Cr-Commit-Position: refs/heads/master@{#610983}
3 files changed