GitLab

Several of the functions here are never called. Several others are only
called from WebView::ApplyWebPreferences which is within blink so it can
simply call the RuntimeEnabledFeatures functions directly.

We also correct links in related documentation.

Bug: None
Change-Id: I2317f0c5ce328db14cb1e1e2c2ccf3d45bb13c47
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2522002Reviewed-by: Jeremy Roman <jbroman@chromium.org>
Commit-Queue: Kevin McNee <mcnee@chromium.org>
Cr-Commit-Position: refs/heads/master@{#825570}