third_party/WebKit/LayoutTests/fast/canvas/imagebitmap/transferImageBitmap-alpha-expected.html - chromium/src - Git at Google

 <!DOCTYPE html>
 <canvas id = 'c' width='100' height='100' style='background-color:red;'></canvas>
 <script>
 var ctx = document.getElementById('c').getContext('2d', { alpha: true });
 ctx.fillStyle = 'rgba(0, 255, 0, 0.5)';
 ctx.fillRect(0, 0, 100, 100);
 </script>
	<!DOCTYPE html>
	<canvas id = 'c' width='100' height='100' style='background-color:red;'></canvas>
	<script>
	var ctx = document.getElementById('c').getContext('2d', { alpha: true });
	ctx.fillStyle = 'rgba(0, 255, 0, 0.5)';
	ctx.fillRect(0, 0, 100, 100);
	</script>