Drop non-standard document.implementation.createCSSStyleSheet() API. This was never-implemented by Firefox and they actually rejected implementing it: - Drop non-standard document.implementation.createCSSStyleSheet() API Blink dropped this API back in 2014 after getting UseCounter data showing this was not used: - https://bugs.chromium.org/p/chromium/issues/detail?id=363561 - https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/uDjkuGA9gQs/zytnzJ6WryYJ The API is not useful in its current state because even though document.implementation.createCSSStyleSheet() allows you to create a stylesheet, there is currently no way to associate it with the document.
Created attachment 309409 [details] Patch
Comment on attachment 309409 [details] Patch Clearing flags on attachment: 309409 Committed r216458: <http://trac.webkit.org/changeset/216458>
All reviewed patches have been landed. Closing bug.
*** Bug 60973 has been marked as a duplicate of this bug. ***