Converting tests over to using event streams.

tools/dom/docs/docs.json

Index: tools/dom/docs/docs.json
diff --git a/tools/dom/docs/docs.json b/tools/dom/docs/docs.json
index 1cf29dd54779e24322a5a16414cfab6cfe0093ab..062948f3e5b2764cfba8169c7c97914d34977170 100644
--- a/tools/dom/docs/docs.json
+++ b/tools/dom/docs/docs.json
@@ -12,7 +12,7 @@
     },
     "CanvasPattern": {
       "comment": [
-        "/**\n * An opaque object representing a pattern of image, canvas, or video.\n *\n * Created by calling [createPattern] on a [CanvasRenderingContext2D] object.\n *\n * Example usage:\n *\n *     var canvas = new CanvasElement(width: 600, height: 600);\n *     var ctx = canvas.context2d;\n *     var img = new ImageElement();\n *     // Image src needs to be loaded before pattern is applied.\n *     img.on.load.add((event) {\n *       // When the image is loaded, create a pattern\n *       // from the ImageElement.\n *       CanvasPattern pattern = ctx.createPattern(img, 'repeat');\n *       ctx.rect(0, 0, canvas.width, canvas.height);\n *       ctx.fillStyle = pattern;\n *       ctx.fill();\n *     });\n *     img.src = \"images/foo.jpg\";\n *     document.body.children.add(canvas);\n *\n * See also:\n * * [CanvasPattern](https://developer.mozilla.org/en-US/docs/DOM/CanvasPattern) from MDN.\n * * [CanvasPattern](http://www.whatwg.org/specs/web-apps/current-work/multipage/the-canvas-element.html#canvaspattern) from whatwg.\n * * [CanvasPattern](http://www.w3.org/TR/2010/WD-2dcontext-20100304/#canvaspattern) from W3C.\n */"
+        "/**\n * An opaque object representing a pattern of image, canvas, or video.\n *\n * Created by calling [createPattern] on a [CanvasRenderingContext2D] object.\n *\n * Example usage:\n *\n *     var canvas = new CanvasElement(width: 600, height: 600);\n *     var ctx = canvas.context2d;\n *     var img = new ImageElement();\n *     // Image src needs to be loaded before pattern is applied.\n *     img.onLoad.listen((event) {\n *       // When the image is loaded, create a pattern\n *       // from the ImageElement.\n *       CanvasPattern pattern = ctx.createPattern(img, 'repeat');\n *       ctx.rect(0, 0, canvas.width, canvas.height);\n *       ctx.fillStyle = pattern;\n *       ctx.fill();\n *     });\n *     img.src = \"images/foo.jpg\";\n *     document.body.children.add(canvas);\n *\n * See also:\n * * [CanvasPattern](https://developer.mozilla.org/en-US/docs/DOM/CanvasPattern) from MDN.\n * * [CanvasPattern](http://www.whatwg.org/specs/web-apps/current-work/multipage/the-canvas-element.html#canvaspattern) from whatwg.\n * * [CanvasPattern](http://www.w3.org/TR/2010/WD-2dcontext-20100304/#canvaspattern) from W3C.\n */"
       ]
     },
     "CanvasRenderingContext": {
@@ -39,4 +39,4 @@
       }
     }
   }
-}
+}