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diff --git a/dom/canvas/test/webgl-conf/checkout/conformance/rendering/gl-scissor-canvas-dimensions.html b/dom/canvas/test/webgl-conf/checkout/conformance/rendering/gl-scissor-canvas-dimensions.html
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+++ b/dom/canvas/test/webgl-conf/checkout/conformance/rendering/gl-scissor-canvas-dimensions.html
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+<!--
+
+/*
+** Copyright (c) 2014 The Khronos Group Inc.
+**
+** Permission is hereby granted, free of charge, to any person obtaining a
+** copy of this software and/or associated documentation files (the
+** "Materials"), to deal in the Materials without restriction, including
+** without limitation the rights to use, copy, modify, merge, publish,
+** distribute, sublicense, and/or sell copies of the Materials, and to
+** permit persons to whom the Materials are furnished to do so, subject to
+** the following conditions:
+**
+** The above copyright notice and this permission notice shall be included
+** in all copies or substantial portions of the Materials.
+**
+** THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+** IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+** CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+** MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.
+*/
+
+-->
+
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>WebGL Scissor Canvas Dimensions Test</title>
+<link rel="stylesheet" href="../../resources/js-test-style.css"/>
+<script src="../../js/js-test-pre.js"></script>
+<script src="../../js/webgl-test-utils.js"></script>
+<style>
+canvas {
+    border: 1px solid #000;
+    width: 64px;
+    height: 64px;
+}
+</style>
+</head>
+<body>
+<canvas id="canvas1" width="16" height="16"> </canvas>
+<canvas id="canvas2" width="16" height="16"> </canvas>
+<div id="description"></div>
+<div id="console"></div>
+<script>
+"use strict";
+description("Check that scissoring is initially disabled and that the scissor rect does not change when canvas size changes.");
+
+var wtu = WebGLTestUtils;
+
+function testInit(canvas, attribs) {
+  var gl = wtu.create3DContext(canvas, attribs);
+  if (!gl) {
+    testFailed("context does not exist");
+    return;
+  }
+  debug("Testing that scissor test is initially disabled");
+  // Setting the scissor rect should have no effect on drawing.
+  gl.scissor(0, 0, 1, 1);
+  gl.clearColor(0, 1, 0, 1);
+  gl.clear(gl.COLOR_BUFFER_BIT);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "there should be no errors");
+  wtu.checkCanvasRect(gl, 0, 0, canvas.width, canvas.height, [0, 255, 0, 255], "whole canvas should be green");
+}
+
+function testCanvasSizeChange(canvas, attribs) {
+  var gl = wtu.create3DContext(canvas, attribs);
+  if (!gl) {
+    testFailed("context does not exist");
+    return;
+  }
+  debug("Testing that scissor rect dimensions do not change if the canvas is resized.");
+  canvas.width = 32;
+  canvas.height = 32;
+  gl.viewport(0, 0, 32, 32);
+  gl.enable(gl.SCISSOR_TEST);
+  gl.clearColor(0, 1, 0, 1);
+  gl.clear(gl.COLOR_BUFFER_BIT);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "there should be no errors");
+  wtu.checkCanvasRect(gl, 0, 0, 16, 16, [0, 255, 0, 255], "area inside scissor should be green");
+  wtu.checkCanvasRect(gl, 0, 16, 32, 16, [0, 0, 0, 0], "area outside scissor should be black");
+  wtu.checkCanvasRect(gl, 16, 0, 16, 16, [0, 0, 0, 0], "area outside scissor should be black");
+}
+
+testInit(document.getElementById("canvas1"), {antialias: false});
+debug("");
+testCanvasSizeChange(document.getElementById("canvas2"), {antialias: false});
+
+var successfullyParsed = true;
+
+</script>
+<script src="../../js/js-test-post.js"></script>
+
+</body>
+</html>