Fix typo parameter name.

sdk/lib/html/dartium/html_dartium.dart

Index: sdk/lib/html/dartium/html_dartium.dart
diff --git a/sdk/lib/html/dartium/html_dartium.dart b/sdk/lib/html/dartium/html_dartium.dart
index 9c76577f25a1c1770a038955e0e385a4edc8ec1e..0027a92c2e9d49662b719a33931e0dd8318353e4 100644
--- a/sdk/lib/html/dartium/html_dartium.dart
+++ b/sdk/lib/html/dartium/html_dartium.dart
@@ -35780,8 +35780,8 @@ Element query(String relativeSelectors) => document.query(relativeSelectors);
 @Experimental()
 ElementList queryAll(String relativeSelectors) => document.queryAll(relativeSelectors);
 
-Element querySelector(String selector) => document.querySelector(selector);
-ElementList querySelectorAll(String selector) => document.querySelectorAll(selector);
+Element querySelector(String selectors) => document.querySelector(selectors);
+ElementList querySelectorAll(String selectors) => document.querySelectorAll(selectors);
 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.