CanvasPattern does not have the setTransform method

[garthhenning]

The CanvasPattern created by a canvas' context should have one method to setTransform() per the spec. The method should take either a DOMMatrix or an SVGMatrix.

https://html.spec.whatwg.org/multipage/canvas.html#dom-canvaspattern-settransform https://developer.mozilla.org/en-US/docs/Web/API/CanvasPattern/setTransform

[jDramaix]

cOuld you propose a change in the extern file on google/closure-compiler project? Just add the missing method(s)

[zbynek]

Downstrem PR https://github.com/google/closure-compiler/pull/4154/files

[jDramaix]

Thanks for the contribution