Revert "Implementing polyfills for insertAdjacent* to get them working on FF."

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 cfa8687eb1750be4fc65416162c9fae320e50629..39be8b77b636ed9892b869e413db27640c4e0696 100644
--- a/lib/html/dart2js/html_dart2js.dart
+++ b/lib/html/dart2js/html_dart2js.dart
@@ -30,7 +30,7 @@ class _Default {
   const _Default();
 }
 
-const _default = const _Default();
+final _default = const _Default();
 
 // Workaround for tags like <cite> that lack their own Element subclass --
 // Dart issue 1990.
@@ -5264,14 +5264,6 @@ 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>());
@@ -6089,14 +6081,14 @@ 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,
@@ -6185,75 +6177,11 @@ 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 */
-  Element insertAdjacentElement(String where, Element element) {
-    if (JS('bool', '!!this.insertAdjacentElement')) {
-      _insertAdjacentElement(where, element);
-    } else {
-      _insertAdjacentNode(where, element);
-    }
-    return element;
-  }
-
-  void _insertAdjacentElement(String where, Element element)
-      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);
@@ -6290,6 +6218,12 @@ 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 const int ALLOW_KEYBOARD_INPUT = 1;
 
   int get $dom_childElementCount() native "return this.childElementCount;";
@@ -6387,9 +6321,9 @@ class _ElementImpl extends _NodeImpl implements Element native "*Element" {
 // Temporary dispatch hook to support WebComponents.
 Function dynamicUnknownElementDispatcher;
 
-const _START_TAG_REGEXP = const RegExp('<(\\w+)');
+final _START_TAG_REGEXP = const RegExp('<(\\w+)');
 class _ElementFactoryProvider {
-  static const _CUSTOM_PARENT_TAG_MAP = const {
+  static final _CUSTOM_PARENT_TAG_MAP = const {
     'body' : 'html',
     'head' : 'html',
     'caption' : 'table',
@@ -9842,7 +9776,7 @@ class _MutationObserverImpl implements MutationObserver native "*MutationObserve
   }
 
    // TODO: Change to a set when const Sets are available.
-  static const _boolKeys =
+  static final _boolKeys =
     const {'childList': true,
            'attributes': true,
            'characterData': true,
@@ -23853,17 +23787,6 @@ 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