Bring accessibility-audit up to date

chrome/test/data/webui/test_api.js

Index: chrome/test/data/webui/test_api.js
diff --git a/chrome/test/data/webui/test_api.js b/chrome/test/data/webui/test_api.js
index c16f362b44f2454b2ce072d01cc0b5525e986270..07510ae3ee6ee0c226b702b4c5681704c12eeafa 100644
--- a/chrome/test/data/webui/test_api.js
+++ b/chrome/test/data/webui/test_api.js
@@ -142,6 +142,8 @@ var testing = {};
       if (!this.accessibilityAuditConfig_) {
         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