Client Hints
Client Hints can be used as input to proactive content negotiation;
just as the Accept header allowed clients to indicate what formats
they prefer, Client Hints allow clients to indicate a list of device
and agent specific preferences.
See:
https://github.com/igrigorik/http-client-hints/blob/draft2/draft-grigorik-http-client-hints-01.txt
Patched from https://codereview.chromium.org/
23654014/, which was
patched from https://codereview.chromium.org/
11970002
BUG=170388
CONTRIBUTOR=yoav@yoav.ws
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=225425
Review URL: https://codereview.chromium.org/
24451003
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@227178 0039d316-1c4b-4281-b951-d872f2087c98