Header parser:  Don't allow single quotes.

No HTTP header specs allow single quotes to be used instead of double
quotes, so this CL better aligns Chrome with the spec.

Testing current behavior, using
FireFox doesn't support single quotes, but Chrome and Edge do.

Bug: 896233, 179825
Change-Id: I29f034180d3dec06d767e6dff0ce938f48e47147
Reviewed-on: https://chromium-review.googlesource.com/c/1286733
Reviewed-by: Min Qin <qinmin@chromium.org>
Reviewed-by: Peter Beverloo <peter@chromium.org>
Reviewed-by: Asanka Herath <asanka@chromium.org>
Commit-Queue: Matt Menke <mmenke@chromium.org>
Cr-Commit-Position: refs/heads/master@{#602768}
9 files changed