GitLab

This CL adds a new feature, kNoReferrers, to subsume the functionality
of the --no-referrers switch.  When the feature is *true*, the
kEnableReferrers pref will have its default value set to *false*.  This
is the current effect of setting the --no-referrers switch.

A separate CL, crrev.com/c/1808144, is in progress to remove the switch
itself.

This is one of a series of changes adding
functionality to run a Finch experiment exploring different
levels of referrer policy and caps.

R=creis, mmenke

depending on the value of the feature.

Test: Added browser test to confirm that the pref is set correctly
Bug: 1004486
Change-Id: If250cf4f29523328e540aa23672436071fbbb10a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1806080
Commit-Queue: Matt Menke <mmenke@chromium.org>
Reviewed-by: Matt Menke <mmenke@chromium.org>
Cr-Commit-Position: refs/heads/master@{#699349}