text: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
   * 
   * 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.
   */
  
  
  #include "pagespeed/kernel/html/empty_html_filter.h"
  #include "pagespeed/kernel/base/string.h"
  
  namespace net_instaweb {
  
  class HtmlCharactersNode;
  class HtmlCdataNode;
  class HtmlCommentNode;
  class HtmlDirectiveNode;
  class HtmlElement;
  class HtmlIEDirectiveNode;
  
  EmptyHtmlFilter::EmptyHtmlFilter() {
  }
  
  EmptyHtmlFilter::~EmptyHtmlFilter() {
  }
  
  void EmptyHtmlFilter::StartDocument() {
  }
  
  void EmptyHtmlFilter::EndDocument() {
  }
  
  void EmptyHtmlFilter::StartElement(HtmlElement* element) {
  }
  
  void EmptyHtmlFilter::EndElement(HtmlElement* element) {
  }
  
  void EmptyHtmlFilter::Cdata(HtmlCdataNode* cdata) {
  }
  
  void EmptyHtmlFilter::Comment(HtmlCommentNode* comment) {
  }
  
  void EmptyHtmlFilter::IEDirective(HtmlIEDirectiveNode* directive) {
  }
  
  void EmptyHtmlFilter::Characters(HtmlCharactersNode* characters) {
  }
  
  void EmptyHtmlFilter::Directive(HtmlDirectiveNode* directive) {
  }
  
  void EmptyHtmlFilter::Flush() {
  }
  
  void EmptyHtmlFilter::DetermineEnabled(GoogleString* disabled_reason) {
    set_is_enabled(true);
  }
  
  }  // namespace net_instaweb
  