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diff --git a/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-base-level-bug.html b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-base-level-bug.html
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+<!--
+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>WebGL2 texture base level bug conformance 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>
+<script src="../../../js/tests/tex-image-and-sub-image-utils.js"></script>
+</head>
+<body>
+<canvas id="example" width="2" height="2" style="width: 2px; height: 2px;"></canvas>
+<div id="description"></div>
+<div id="console"></div>
+
+<script>
+"use strict";
+description(document.title);
+var wtu = WebGLTestUtils;
+var canvas = document.getElementById("example");
+var gl = wtu.create3DContext("example", undefined, 2);
+var tiu = TexImageUtils;
+
+wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Should be no errors from setup.");
+
+function runtest() {
+  debug("");
+  debug("This is a regression test for <a href='https://crbug.com/705865'>Chromium Issue 705865</a>");
+  var tex = gl.createTexture();
+  var program = tiu.setupTexturedQuad(gl, "RGBA");
+
+  // Test that filling partial levels is enough for mipmapping.
+  var width = 2;
+  var height = 2;
+  gl.bindTexture(gl.TEXTURE_2D, tex);
+  wtu.fillTexture(gl, tex, width, height, [255, 0, 0, 255], 2, gl.RGBA, gl.UNSIGNED_BYTE);
+  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_BASE_LEVEL, 2);
+  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
+  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Texture setup should succeed");
+
+  canvas.width = width;
+  canvas.height = height;
+  gl.viewport(0, 0, width, height);
+
+  wtu.clearAndDrawUnitQuad(gl);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "clearAndDrawQuad should succeed");
+  wtu.checkCanvas(gl, [255, 0, 0, 255], "should draw with [255, 0, 0, 255]");
+
+  width = 1;
+  height = 1;
+  gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, width, height, 0, gl.RGBA, gl.UNSIGNED_BYTE, null);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texImage2D should succeed");
+
+  wtu.clearAndDrawUnitQuad(gl);
+  wtu.checkCanvas(gl, [255, 0, 0, 255], "should draw with [255, 0, 0, 255]");
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR,"checkCanvas should succeed");
+
+  gl.deleteTexture(tex);
+
+};
+
+runtest();
+var successfullyParsed = true;
+
+</script>
+<script src="../../../js/js-test-post.js"></script>
+
+</body>
+</html>