Preserve MIME type parameters (e.g., charset, boundary) in data URL Content-Type headers per the Fetch Standard. CL: https://chromium-review.googlesource.com/c/chromium/src/+/7135039
Currently, Chromium only extracts the charset parameter from data URLs and discards other MIME type parameters. Per the Fetch Standard, data URL MIME type parameters should be preserved in the Content-Type header. For example: - data:text/plain;a=b,X should return Content-Type: text/plain;a=b - data:;charset=" x",X should return Content-Type: text/plain;charset=" x" This change brings Chromium into compliance with the Fetch Standard and improves web compatibility with other browsers. Spec: https://fetch.spec.whatwg.org/#data-url-processor
Explainers: https://chromium-review.googlesource.com/c/chromium/src/+/7135039