Add HTTP Client-Hint headers to outgoing requests
Extension to allow Client-Hints header to be set for testing / experimentation purposes.
Client-Hints (CH-*:) HTTP Header is proposed as a way of allowing browsers to communicate details of screen height, width and display pixel ratio to servers so that the server can return resources, especially images, that are optimised.
See https://github.com/igrigorik/http-client-hints for more on the Client-Hints proposal
Source code for extension can be found on GitHub - https://github.com/andydavies/Client-Hints- pull requests welcomed.