Bug 123978 – CORS enabled data:URL images fail to load

• Status: NEW
• Component: Images

[Stefan Kienzle]

Steps to reproduce the problem:
I want to load CORS enabled data:URL images (in JS or HTML) - both cases are failing.
JS:
var img = document.createElement('img');
img.onload = function () {
 ...
};
img.crossOrigin = '';
img.src = <data-url>;

HTML:
<img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAB4AAAAeCAMAAAAM7l6QAAAAGXRFWHRTb2Z0d2FyZQBBZG9iZSBJbWFnZVJlYWR5ccllPAAAAAlQTFRFa2tr3Nzc////HKA8dAAAAD9JREFUeNpiYCAAmMCAkQkrTaQ0DkAdaZx2AxmMQAAmYUwmGDmoXU6ZNCPCl5jkoHY5ZU4jyt+D0uV4DQcIMADuxwY6Y1aBvAAAAABJRU5ErkJggg==" crossorigin />

Open this jsfiddle: http://jsfiddle.net/Kienz/Dv3Eu/ 
You should see three w3c images!

What is the expected behavior?
Images should be loaded.

What went wrong?
The images don't load and you got the following error in dev console:
Cross-origin image load denied by Cross-Origin Resource Sharing policy.

In Safari 5.1 (Windows 7) it works. Safari 7 (Mac OS 10.9) it fails.

[youenn fablet]

The case of crossorigin="anonymous" should be handled once data url processing is handled within WebCore (see bug 109199).