Require the entire document-tree of an SVGImage to be single-origin

LayoutTests/canvas/image-with-foreignobject-taint-canvas-2.html

Index: LayoutTests/canvas/image-with-foreignobject-taint-canvas-2.html
diff --git a/LayoutTests/canvas/image-with-foreignobject-taint-canvas.html b/LayoutTests/canvas/image-with-foreignobject-taint-canvas-2.html
similarity index 91%
copy from LayoutTests/canvas/image-with-foreignobject-taint-canvas.html
copy to LayoutTests/canvas/image-with-foreignobject-taint-canvas-2.html
index 6a61403aef33a56a1c40672d506014cb020ab96c..c9476fd55b500f10272ee296b18ad1bcfed5c614 100644
--- a/LayoutTests/canvas/image-with-foreignobject-taint-canvas.html
+++ b/LayoutTests/canvas/image-with-foreignobject-taint-canvas-2.html
@@ -11,7 +11,7 @@ function runTest() {
   context = canvas.getContext('2d');
 
   image = document.createElement('img');
-  image.setAttribute('src', 'resources/svg-with-image-with-foreignobject.svg');
+  image.setAttribute('src', 'resources/svg-with-multiple-images-one-with-foreignobject.svg');
   image.onload = function() {
     pattern = context.createPattern(image, 'repeat');
     context.fillStyle = pattern;