It seems the SVGTransformList::initialize() method has no visual effect when called.
Created attachment 15040 [details] testcase Should fade out, scale down and slightly rotate an object around its center using an animation. Works fine in Opera and Firefox, but not in WebKit.
Created attachment 15069 [details] Initial patch Thanks for the nice testcase - fixed now. All SVGTransformList methods should work from JS now.
Comment on attachment 15069 [details] Initial patch Looks sane enough.
Landed in r23554.