Improved HTML parsing

editor/tools/plugins/com.google.dart.engine/src/com/google/dart/engine/html/ast/visitor/XmlVisitor.java

 /*
  * Copyright (c) 2013, the Dart project authors.
  * 
  * Licensed under the Eclipse Public License v1.0 (the "License"); you may not use this file except
  * in compliance with the License. You may obtain a copy of the License at
  * 
  * http://www.eclipse.org/legal/epl-v10.html
  * 
  * Unless required by applicable law or agreed to in writing, software distributed under the License
  * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
  * or implied. See the License for the specific language governing permissions and limitations under
  * the License.
  */
 package com.google.dart.engine.html.ast.visitor;
 
+import com.google.dart.engine.html.ast.HtmlScriptTagNode;
 import com.google.dart.engine.html.ast.HtmlUnit;
 import com.google.dart.engine.html.ast.XmlAttributeNode;
 import com.google.dart.engine.html.ast.XmlNode;
 import com.google.dart.engine.html.ast.XmlTagNode;
 
 /**
  * The interface {@code XmlVisitor} defines the behavior of objects that can be used to visit an
  * {@link XmlNode} structure.
  * 
  * @coverage dart.engine.html
  */
 public interface XmlVisitor<R> {
+  public R visitHtmlScriptTagNode(HtmlScriptTagNode node);
 
-  R visitHtmlUnit(HtmlUnit htmlUnit);
+  public R visitHtmlUnit(HtmlUnit htmlUnit);
 
-  R visitXmlAttributeNode(XmlAttributeNode xmlAttributeNode);
+  public R visitXmlAttributeNode(XmlAttributeNode xmlAttributeNode);
 
-  R visitXmlTagNode(XmlTagNode xmlTagNode);
+  public R visitXmlTagNode(XmlTagNode xmlTagNode);
 }