Block `<meta http-equiv="set-cookie" ...>`

Intent to Deprecate: https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/0sJ8GUJO0Dw/iMmcXLIGBAAJ

HTML discussion at https://github.com/whatwg/html/issues/3076.

Bug: 767813
Change-Id: Ibbbce7794c6802e66eeb4e8e6d95acedebbe840c
Reviewed-on: https://chromium-review.googlesource.com/800290
Reviewed-by: Jochen Eisinger <jochen@chromium.org>
Commit-Queue: Mike West <mkwst@chromium.org>
Cr-Commit-Position: refs/heads/master@{#521338}
4 files changed