Revert "Add some sweet XML classes."

client/html/src/XMLDocumentWrappingImplementation.dart

-// 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.
-
-class XMLDocumentWrappingImplementation extends DocumentWrappingImplementation
-    implements XMLDocument {
-  // This really just wants to extend both DocumentWrappingImplementation and
-  // XMLElementWrappingImplementation, but since that's not possible we delegate
-  // to the latter.
-  XMLElement documentEl;
-
-  XMLDocumentWrappingImplementation._wrap(documentPtr, ptr) :
-      super._wrap(documentPtr, ptr) {
-    // We want to wrap the pointer in an XMLElement to use its implementation of
-    // various Element methods, but DOMWrapperBase complains if
-    // dartObjectLocalStorage is already set.
-    ptr.dartObjectLocalStorage = null;
-    this.documentEl = new XMLElementWrappingImplementation._wrap(ptr);
-    ptr.dartObjectLocalStorage = this;
-  }
-
-  factory XMLDocumentWrappingImplementation.xml(String xml) {
-    final parser = new dom.DOMParser();
-    final xmlDoc = LevelDom.wrapDocument(
-        parser.parseFromString(xml, 'text/xml'));
-    // When XML parsing fails, the browser creates a document containing a
-    // PARSERERROR element. We want to throw an exception when parsing fails,
-    // but we don't want false positives if the user intends to create a
-    // PARSERERROR element for some reason, so we check for that in the input.
-    //
-    // TODO(nweiz): This is pretty hacky, it would be nice to this some other
-    // way if we can find one.
-    if (!xml.toLowerCase().contains('<parsererror') &&
-        xmlDoc.query('parsererror') != null) {
-      throw new IllegalArgumentException('Error parsing XML: "$xml"');
-    }
-    return xmlDoc;
-  }
-
-  Node get parent() => null;
-
-  Node _insertAdjacentNode(String where, Node node) {
-    switch (where.toLowerCase()) {
-      case "beforebegin":
-        return null;
-      case "afterend":
-        return null;
-      case "afterbegin":
-        this.insertBefore(node, nodes.first);
-        return node;
-      case "beforeend":
-        this.nodes.add(node);
-        return node;
-      default:
-        throw new IllegalArgumentException("Invalid position ${where}");
-    }
-  }
-
-  XMLElement insertAdjacentElement([String where = null,
-      XMLElement element = null]) => this._insertAdjacentNode(where, element);
-
-  void insertAdjacentText([String where = null, String text = null]) {
-    this._insertAdjacentNode(where, new Text(text));
-  }
-
-  void insertAdjacentHTML(
-      [String position_OR_where = null, String text = null]) {
-    this._insertAdjacentNode(
-      position_OR_where, new DocumentFragment.xml(text));
-  }
-
-  XMLElement get activeElement() => null;
-
-  void set body(Element value) {
-    throw new UnsupportedOperationException("XML documents don't have a body.");
-  }
-
-  String get cookie() {
-    throw new UnsupportedOperationException(
-        "XML documents don't support cookies.");
-  }
-
-  void set cookie(String value) {
-    throw new UnsupportedOperationException(
-        "XML documents don't support cookies.");
-  }
-
-  String get manifest() => "";
-
-  void set manifest(String value) {
-    throw new UnsupportedOperationException(
-        "Manifest can't be set for XML documents.");
-  }
-
-  Set<String> get classes() => documentEl.classes;
-
-  ElementList get elements() => documentEl.elements;
-
-  // TODO: The type of value should be Collection<Element>. See http://b/5392897
-  void set elements(value) { documentEl.elements = value; }
-
-  String get outerHTML() => documentEl.outerHTML;
-
-  String get innerHTML() => documentEl.innerHTML;
-
-  void set innerHTML(String xml) { documentEl.innerHTML = xml; }
-
-  String get contentEditable() => documentEl.contentEditable;
-
-  void set contentEditable(String value) { documentEl.contentEditable = value; }
-
-  bool get isContentEditable() => documentEl.isContentEditable;
-
-  bool get draggable() => documentEl.draggable;
-
-  void set draggable(bool value) { documentEl.draggable = value; }
-
-  bool get spellcheck() => documentEl.spellcheck;
-
-  void set spellcheck(bool value) { documentEl.spellcheck = value; }
-
-  bool get hidden() => documentEl.hidden;
-
-  void set hidden(bool value) { documentEl.hidden = value; }
-
-  int get tabIndex() => documentEl.tabIndex;
-
-  void set tabIndex(int value) { documentEl.tabIndex = value; }
-
-  String get id() => documentEl.id;
-
-  void set id(String value) { documentEl.id = value; }
-
-  String get title() => documentEl.title;
-
-  void set title(String value) { documentEl.title = value; }
-
-  String get webkitdropzone() => documentEl.webkitdropzone;
-
-  void set webkitdropzone(String value) { documentEl.webkitdropzone = value; }
-
-  String get lang() => documentEl.lang;
-
-  void set lang(String value) { documentEl.lang = value; }
-
-  String get dir() => documentEl.dir;
-
-  void set dir(String value) { documentEl.dir = value; }
-}