Automatic update from web-platform-tests Support colorspace and alpha attributes on <input type=color> Adds the colorspace/colorSpace[1] and alpha[2] content/IDL attributes behind the experimental InputTypeColorEnhancements flag, letting color inputs serialize wide-gamut (Display P3) and alpha-bearing values per the HTML spec. Achromatic sRGB colors are converted to Display P3 directly to avoid float-matrix white-point drift. [1]: https://html.spec.whatwg.org/multipage/input.html#dom-input-colorspace [2]: https://html.spec.whatwg.org/multipage/input.html#attr-input-alpha ChromeStatus: https://chromestatus.com/feature/5736024861966336 Bug: 368059226 Change-Id: Ib94a600e3b5be2872ab114d30f3681b72e81fef3 Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/7952977 Commit-Queue: Jason Leo <cgqaq@chromium.org> Reviewed-by: David Baron <dbaron@chromium.org> Cr-Commit-Position: refs/heads/main@{#1651849} -- wpt-commits: c07926297a56d4ad373146942cc093d24f9610cb wpt-pr: 60837