src/third_party/web_platform_tests/conformance-checkers/html/elements/picture/sizes-microsyntax-initial-source-size-value-novalid.html - cobalt - Git at Google

 <!DOCTYPE html>
 <meta charset=utf-8>
 <title>invalid sizes-microsyntax-initial-source-size-value</title>
 <img sizes='initial' srcset='x 100w, y 200w' src=x alt>
	<!DOCTYPE html>
	<meta charset=utf-8>
	<title>invalid sizes-microsyntax-initial-source-size-value</title>
	<img sizes='initial' srcset='x 100w, y 200w' src=x alt>