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diff --git a/dom/canvas/test/webgl-conf/checkout/conformance/glsl/bugs/sketchfab-lighting-shader-crash.html b/dom/canvas/test/webgl-conf/checkout/conformance/glsl/bugs/sketchfab-lighting-shader-crash.html
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+++ b/dom/canvas/test/webgl-conf/checkout/conformance/glsl/bugs/sketchfab-lighting-shader-crash.html
@@ -0,0 +1,84 @@
+<!--
+Copyright (c) 2019 The Khronos Group Inc.
+Use of this source code is governed by an MIT-style license that can be
+found in the LICENSE.txt file.
+-->
+
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>Sketchfab Lighting Shader Crash</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>
+<script id='vshader1' type='x-shader/x-vertex'>
+attribute float testValue;          // Can be uniform as well.
+varying mediump float FragVarying;  // Necessary to reproduce.
+
+void main() {
+  // Crashes with mat4 as well. Does not crash with vectors.
+  mat2 projectionMatrix = mat2(0.0, 0.0, 0.0, 0.0);
+  if (testValue == 1.0)
+  {
+    // Using the matrix variable appears necessary.
+    projectionMatrix[0][0] = 1.0;
+  }
+
+  FragVarying = 0.0;
+  // Referencing the matrix is necessary though clearly the compiler
+  // doesn't realize the assignment is useless.
+  gl_Position = vec4(projectionMatrix[1][0], 0.0, 0.0, 1.0);
+}
+</script>
+<script id='fshader1' type='x-shader/x-fragment'>
+precision mediump float;
+varying float FragVarying;
+
+void main() {
+  gl_FragColor = vec4(FragVarying, 0.0, 0.0, 1.0);
+}
+</script>
+</head>
+<body>
+<div id="description"></div>
+<div id="console"></div>
+<script>
+"use strict";
+description("This test demonstrates a crash on the Nexus 5 (Adreno 330) when compiling Sketchfab's lighting shader. <a href='https://code.google.com/p/chromium/issues/detail?id=551937'>crbug.com/551937</a>");
+
+debug("");
+
+var wtu = WebGLTestUtils;
+var gl = wtu.create3DContext();
+
+gl.canvas.addEventListener("webglcontextlost", function(e) {
+   testFailed("WebGL context lost");
+});
+
+if (!gl) {
+    testFailed("WebGL context does not exist");
+} else {
+    testPassed("WebGL context exists");
+    debug("");
+
+    var program1 = wtu.setupProgram(gl, ['vshader1', 'fshader1']);
+    if (!gl.getProgramParameter(program1, gl.LINK_STATUS)) {
+        testFailed("Program failed to link");
+    } else {
+        testPassed("Program linked successfully");
+    }
+    wtu.glErrorShouldBe(gl, gl.NO_ERROR, "there should be no errors");
+
+    debug("");
+}
+
+// Cycle through rAF a few times to give any webglcontextlost events a chance to propagate.
+wtu.waitForComposite(function() { finishTest(); });
+
+debug("");
+var successfullyParsed = true;
+</script>
+
+</body>
+</html>