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diff --git a/dom/canvas/test/webgl-conf/checkout/conformance2/glsl3/misplaced-version-directive.html b/dom/canvas/test/webgl-conf/checkout/conformance2/glsl3/misplaced-version-directive.html
new file mode 100644
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+++ b/dom/canvas/test/webgl-conf/checkout/conformance2/glsl3/misplaced-version-directive.html
@@ -0,0 +1,111 @@
+<!--
+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>#version directive should be on the very first line of a OpenGL ES Shading Language 3.00 shader</title>
+<link rel="stylesheet" href="../../resources/js-test-style.css"/>
+<link rel="stylesheet" href="../../resources/glsl-feature-tests.css"/>
+<script src="../../js/js-test-pre.js"></script>
+<script src="../../js/webgl-test-utils.js"></script>
+<script src="../../js/glsl-conformance-test.js"></script>
+</head>
+<body>
+<div id="description"></div>
+<div id="console"></div>
+<!-- Version directive should be on the very first line in ESSL 3, see ESSL 3 section 3.3 -->
+<script id="VertexShaderCommentBeforeVersion" type="x-shader/x-vertex">// This shader is wrong, this is the first line that should have version
+#version 300 es
+precision mediump float;
+in vec4 aPosition;
+
+void main() {
+    gl_Position = aPosition;
+}
+</script>
+<script id="VertexShaderNewlineBeforeVersion" type="x-shader/x-vertex">
+#version 300 es
+precision mediump float;
+in vec4 aPosition;
+
+void main() {
+    gl_Position = aPosition;
+}
+</script>
+<script id="CorrectVertexShader" type="x-shader/x-vertex">#version 300 es
+precision mediump float;
+in vec4 aPosition;
+
+void main() {
+    gl_Position = aPosition;
+}
+</script>
+<script id="FragmentShaderCommentBeforeVersion" type="x-shader/x-fragment">// This shader is wrong, this is the first line that should have version
+#version 300 es
+precision mediump float;
+out vec4 my_FragColor;
+void main() {
+    my_FragColor = vec4(0.0, 1.0, 0.0, 1.0);
+}
+</script>
+<script id="FragmentShaderNewlineBeforeVersion" type="x-shader/x-fragment">
+#version 300 es
+precision mediump float;
+out vec4 my_FragColor;
+void main() {
+    my_FragColor = vec4(0.0, 1.0, 0.0, 1.0);
+}
+</script>
+<script id="CorrectFragmentShader" type="x-shader/x-fragment">#version 300 es
+precision mediump float;
+out vec4 my_FragColor;
+void main() {
+    my_FragColor = vec4(0.0, 1.0, 0.0, 1.0);
+}
+</script>
+<script type="application/javascript">
+"use strict";
+description();
+GLSLConformanceTester.runTests([
+  {
+    vShaderId: "VertexShaderNewlineBeforeVersion",
+    vShaderSuccess: false,
+    fShaderId: "CorrectFragmentShader",
+    fShaderSuccess: true,
+    linkSuccess: false,
+    passMsg: "Vertex shader with a newline before the version directive should fail."
+  },
+  {
+    vShaderId: "VertexShaderCommentBeforeVersion",
+    vShaderSuccess: false,
+    fShaderId: "CorrectFragmentShader",
+    fShaderSuccess: true,
+    linkSuccess: false,
+    passMsg: "Vertex shader with a comment before the version directive should fail."
+  },
+  {
+    vShaderId: "CorrectVertexShader",
+    vShaderSuccess: true,
+    fShaderId: "FragmentShaderCommentBeforeVersion",
+    fShaderSuccess: false,
+    linkSuccess: false,
+    passMsg: "Fragment shader with a comment before the version directive should fail."
+  },
+  {
+    vShaderId: "CorrectVertexShader",
+    vShaderSuccess: true,
+    fShaderId: "FragmentShaderNewlineBeforeVersion",
+    fShaderSuccess: false,
+    linkSuccess: false,
+    passMsg: "Fragment shader with a newline before the version directive should fail."
+  }
+], 2);
+var successfullyParsed = true;
+</script>
+</body>
+</html>