Revert "Adding Element.AddHTML and Element.addText methods."

lib/html/dart2js/html_dart2js.dart

Index: lib/html/dart2js/html_dart2js.dart
diff --git a/lib/html/dart2js/html_dart2js.dart b/lib/html/dart2js/html_dart2js.dart
index ddab04bb537fdd9065a48f14bdf1fe31993d4490..5ba916d5c536c404b98c0187c8c65b801560856c 100644
--- a/lib/html/dart2js/html_dart2js.dart
+++ b/lib/html/dart2js/html_dart2js.dart
@@ -5276,14 +5276,6 @@ class _DocumentFragmentImpl extends _NodeImpl implements DocumentFragment native
     this._insertAdjacentNode(where, new DocumentFragment.html(text));
   }
 
-  void addText(String text) {
-    this.insertAdjacentText('beforeend', text);
-  }
-
-  void addHTML(String text) {
-    this.insertAdjacentHTML('beforeend', text);
-  }
-
   Future<ElementRect> get rect() {
     return _createMeasurementFuture(() => const EmptyElementRect(),
                                     new Completer<ElementRect>());
@@ -6101,14 +6093,14 @@ class _ElementRectImpl implements ElementRect {
 
   // TODO(jacobr): should we move these outside of ElementRect to avoid the
   // overhead of computing them every time even though they are rarely used.
-  final _ClientRectImpl _boundingClientRect;
+  final _ClientRectImpl _boundingClientRect; 
   final _ClientRectListImpl _clientRects;
 
   _ElementRectImpl(_ElementImpl element) :
     client = new _SimpleClientRect(element.$dom_clientLeft,
                                   element.$dom_clientTop,
-                                  element.$dom_clientWidth,
-                                  element.$dom_clientHeight),
+                                  element.$dom_clientWidth, 
+                                  element.$dom_clientHeight), 
     offset = new _SimpleClientRect(element.$dom_offsetLeft,
                                   element.$dom_offsetTop,
                                   element.$dom_offsetWidth,
@@ -6197,74 +6189,11 @@ class _ElementImpl extends _NodeImpl implements Element native "*Element" {
         new Completer<CSSStyleDeclaration>());
   }
 
-  void addText(String text) {
-    this.insertAdjacentText('beforeend', text);
-  }
-
-  void addHTML(String text) {
-    this.insertAdjacentHTML('beforeend', text);
-  }
-
   // Hooks to support custom WebComponents.
   var xtag;
 
   // TODO(vsm): Implement noSuchMethod or similar for dart2js.
 
-  /** @domName Element.insertAdjacentText */
-  void insertAdjacentText(String where, String text) {
-    if (JS('bool', '!!this.insertAdjacentText')) {
-      _insertAdjacentText(where, text);
-    } else {
-      _insertAdjacentNode(where, new Text(text));
-    }
-  }
-
-  void _insertAdjacentText(String where, String text)
-      native 'insertAdjacentText';
-
-  /** @domName Element.insertAdjacentHTML */
-  void insertAdjacentHTML(String where, String text) {
-    if (JS('bool', '!!this.insertAdjacentHTML')) {
-      _insertAdjacentHTML(where, text);
-    } else {
-      _insertAdjacentNode(where, new DocumentFragment.html(text));
-    }
-  }
-
-  void _insertAdjacentHTML(String where, String text)
-      native 'insertAdjacentHTML';
-
-  /** @domName Element.insertAdjacentHTML */
-  void insertAdjacentElement(String where, Element element) {
-    if (JS('bool', '!!this.insertAdjacentElement')) {
-      _insertAdjacentElement(where, element);
-    } else {
-      _insertAdjacentNode(where, element);
-    }
-  }
-
-  void _insertAdjacentElement(String where, String text)
-      native 'insertAdjacentElement';
-
-  void _insertAdjacentNode(String where, Node node) {
-    switch (where.toLowerCase()) {
-      case 'beforebegin':
-        this.parent.insertBefore(node, this);
-        break;
-      case 'afterbegin':
-        this.insertBefore(node, this.nodes.first);
-        break;
-      case 'beforeend':
-        this.nodes.add(node);
-        break;
-      case 'afterend':
-        this.parent.insertBefore(node, this.nextNode);
-        break;
-      default:
-        throw new IllegalArgumentException("Invalid position ${where}");
-    }
-  }
-
 
   _ElementEventsImpl get on() =>
     new _ElementEventsImpl(this);
@@ -6301,6 +6230,12 @@ class _ElementImpl extends _NodeImpl implements Element native "*Element" {
 
   void click() native;
 
+  _ElementImpl insertAdjacentElement(String where, _ElementImpl element) native;
+
+  void insertAdjacentHTML(String where, String html) native;
+
+  void insertAdjacentText(String where, String text) native;
+
   static final int ALLOW_KEYBOARD_INPUT = 1;
 
   int get $dom_childElementCount() native "return this.childElementCount;";
@@ -23910,17 +23845,6 @@ interface Element extends Node, NodeSelector default _ElementFactoryProvider {
   void set dataAttributes(Map<String, String> value);
 
   /**
-   * Adds the specified text as a text node after the last child of this.
-   */
-  void addText(String text);
-
-  /**
-   * Parses the specified text as HTML and adds the resulting node after the
-   * last child of this.
-   */
-  void addHTML(String html);
-
-  /**
    * @domName getClientRects, getBoundingClientRect, clientHeight, clientWidth,
    * clientTop, clientLeft, offsetHeight, offsetWidth, offsetTop, offsetLeft,
    * scrollHeight, scrollWidth, scrollTop, scrollLeft