tree 96d1b2e7869a0ba7f33759c150de3d2575a053de
parent b2c76adeaf48bcae75cd587641ee7aa7342a1998
author Dustin J. Mitchell <djmitche@chromium.org> 1687448485 -0700
committer Blink WPT Bot <blink-w3c-test-autoroller@chromium.org> 1687454517 -0700

Add the Sec-CH-UA-Form-Factor header (re-land)

As described in https://wicg.github.io/ua-client-hints/#sec-ch-ua-form-factor

This is protected by the ClientHintsFormFactor feature flag, which is
disabled by default, so the CL introduces no new behavior. There are
still several open questions about the header, but this initial
implementation should make a suitable starting point regardless of how
those are decided.

This does _not_:
 * Add the hint to devtools (this can wait until more questions are answered).

This is a re-land of crrev.com/c/4558705.

Bug: 1442283
Change-Id: Id57fb319fa51bdde58aaba7b8fb7946a244aa448
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4628277
Reviewed-by: Bo Liu <boliu@chromium.org>
Reviewed-by: Andrey Kosyakov <caseq@chromium.org>
Reviewed-by: Brendon Tiszka <tiszka@chromium.org>
Commit-Queue: Dustin Mitchell <djmitche@chromium.org>
Reviewed-by: Robert Sesek <rsesek@chromium.org>
Reviewed-by: Scott Violet <sky@chromium.org>
Reviewed-by: Arthur Sonzogni <arthursonzogni@chromium.org>
Reviewed-by: Yoav Weiss <yoavweiss@chromium.org>
Reviewed-by: Victor Tan <victortan@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1161224}