[Webkit-unassigned] [Bug 145380] Add Content-DPR header support

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=145380

--- Comment #9 from Alexey Proskuryakov <ap at webkit.org> ---
> If browsers would start taking the density data images have integrated into account now, current images (that have that data set to something) would have the wrong intrinsic dimensions, and current content which layout depends on image intrinsic dimensions would break, without any opt-in signals from the content's author.

This is a lot easier to resolve by adding an opt-in in HTML that would tell the engine to respect image dpi.

Adding such a signal at transport level does not make sense, it's not a feature of transport. Doing this would cause conflicts with loading infrastructure - http caches, appcache, blobs, service workers all need to be analyzed for potential issues, and for impact on future design directions, which is not an easy thing to do. Some of these may be OK, but others certainly aren't, notably, one can't add Content-DPR to a Blob.

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