third_party/blink/web_tests/paint/subpixel/transform-inside-clip.html - chromium/src - Git at Google

 <!doctype HTML>
 <!-- Passes if you see a 1px black border with blue contents -->
 <div style="width: 100px; height: 100px; left: 0.5px; will-change: transform; position: relative;">
   <div style="width: 50px; height: 50px; border: 1px solid gray; left: 0.5px; position: relative; overflow: hidden">
     <div style="width: 200px; height: 200px; transform: scale(1); background: lightblue"></div>
   </div>
 </div>
	<!doctype HTML>
	<!-- Passes if you see a 1px black border with blue contents -->
	<div style="width: 100px; height: 100px; left: 0.5px; will-change: transform; position: relative;">
	<div style="width: 50px; height: 50px; border: 1px solid gray; left: 0.5px; position: relative; overflow: hidden">
	<div style="width: 200px; height: 200px; transform: scale(1); background: lightblue"></div>
	</div>
	</div>