src/third_party/web_platform_tests/conformance-checkers/html/elements/picture/source-srcset-x-with-sizes-novalid.html - cobalt - Git at Google

 <!DOCTYPE html>
 <meta charset=utf-8>
 <title>invalid source-srcset-x-with-sizes</title>
 <picture><source srcset='x 1x, y 2x' sizes=50vw><img src=x alt></picture>
	<!DOCTYPE html>
	<meta charset=utf-8>
	<title>invalid source-srcset-x-with-sizes</title>
	<picture><source srcset='x 1x, y 2x' sizes=50vw><img src=x alt></picture>