Deprecate query and queryAll, also add back querySelector and querySelectorAll.

tools/dom/src/dartium_Platform.dart

 // Copyright (c) 2013, 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.
 
 part of html;
 
 class Platform {
   /**
    * Returns true if dart:typed_data types are supported on this
    * browser.  If false, using these types will generate a runtime
@@ skipping 12 matching lines @@
    * Upgrade all custom elements in the subtree which have not been upgraded.
    *
    * This is needed to cover timing scenarios which the custom element polyfill
    * does not cover.
    *
    * This is also a workaround for dartbug.com/12642 in Dartium.
    */
   static void upgradeCustomElements(Node node) {
     // no-op, provided for dart2js polyfill.
     if (node is Element) {
-      (node as Element).queryAll('*');
+      (node as Element).querySelectorAll('*');
     } else {
       node.nodes.forEach(upgradeCustomElements);
     }
   }
 }