Revert of [a11y] Bring accessibility-audit up to date: v2.10.0 release.

chrome/test/data/webui/test_api.js

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 /**
  * @fileoverview Library providing basic test framework functionality.
  */
 
 // See assert.js for where this is used.
 this.traceAssertionsForTesting = true;
@@ skipping 150 matching lines @@
 
     /**
      * Configuration for the accessibility audit.
      * @type {axs.AuditConfiguration}
      */
     accessibilityAuditConfig_: null,
 
     /**
      * Returns the configuration for the accessibility audit, creating it
      * on-demand.
-     * @return {!axs.AuditConfiguration}
+     * @return {axs.AuditConfiguration}
      */
     get accessibilityAuditConfig() {
-      if (!this.accessibilityAuditConfig_) {
+      // The axs namespace is not available in chromevox tests.
+      // Further, 'window' is not available in unit tests, but since the
+      // accessibility audit library pulls in the closure library,
+      // 'goog.global' has to be present if axs is, so we use that here.
+      if (!this.accessibilityAuditConfig_ &&
+          goog && goog.global && goog.global.axs) {
         this.accessibilityAuditConfig_ = new axs.AuditConfiguration();
 
         this.accessibilityAuditConfig_.showUnsupportedRulesWarning = false;
 
         this.accessibilityAuditConfig_.auditRulesToIgnore = [
             // The "elements with meaningful background image" accessibility
             // audit (AX_IMAGE_01) does not apply, since Chrome doesn't
             // disable background images in high-contrast mode like some
             // browsers do.
             "elementsWithMeaningfulBackgroundImage",
 
             // Most WebUI pages are inside an IFrame, so the "web page should
             // have a title that describes topic or purpose" test (AX_TITLE_01)
             // generally does not apply.
             "pageWithoutTitle",
 
             // TODO(aboxhall): re-enable when crbug.com/267035 is fixed.
             // Until then it's just noise.
             "lowContrastElements",
-
-            // TODO(apacible): re-enable when following issue is fixed.
-            // github.com/GoogleChrome/accessibility-developer-tools/issues/251
-            "tableHasAppropriateHeaders",
         ];
       }
       return this.accessibilityAuditConfig_;
     },
 
     /**
      * Whether to treat accessibility issues (errors or warnings) as test
      * failures. If true, any accessibility issues will cause the test to fail.
      * If false, accessibility issues will cause a console.warn.
      * Off by default to begin with; as we add the ability to suppress false
@@ skipping 91 matching lines @@
      * creating mocks and registering handlers).
      * @type {Function}
      */
     preLoad: function() {},
 
     /**
      * Override this method to perform tasks before running your test.
      * @type {Function}
      */
     setUp: function() {
-      // These should be ignored in many of the web UI tests.
-      // user-image-stream and supervised-user-creation-image-stream are
-      // streaming video elements used for capturing a user image so they
-      // won't have captions and should be ignored everywhere.
-      this.accessibilityAuditConfig.ignoreSelectors('videoWithoutCaptions',
-                                                    '.user-image-stream');
-      this.accessibilityAuditConfig.ignoreSelectors(
-          'videoWithoutCaptions', '.supervised-user-creation-image-stream');
+      var auditConfig = this.accessibilityAuditConfig;
+      if (auditConfig) {
+        // These should be ignored in many of the web UI tests.
+        // user-image-stream and supervised-user-creation-image-stream are
+        // streaming video elements used for capturing a user image so they
+        // won't have captions and should be ignored everywhere.
+        auditConfig.ignoreSelectors('videoWithoutCaptions',
+                                    '.user-image-stream');
+        auditConfig.ignoreSelectors(
+            'videoWithoutCaptions', '.supervised-user-creation-image-stream');
+      }
     },
 
     /**
      * Override this method to perform tasks after running your test. If you
      * create a mock class, you must call Mock4JS.verifyAllMocks() in this
      * phase.
      * @type {Function}
      */
     tearDown: function() {
       if (typeof document != 'undefined') {
@@ skipping 1502 matching lines @@
   exports.TEST = TEST;
   exports.TEST_F = TEST_F;
   exports.RUNTIME_TEST_F = TEST_F;
   exports.GEN = GEN;
   exports.GEN_INCLUDE = GEN_INCLUDE;
   exports.WhenTestDone = WhenTestDone;
 
   // Import the Mock4JS helpers.
   Mock4JS.addMockSupport(exports);
 })(this);