Big merge from experimental to bleeding edge.

utils/apidoc/mdn/extract.dart

 import 'dart:html';
-import 'dart:json';
+import 'dart:json' as json;
 
 // Workaround for HTML lib missing feature.
 Range newRange() {
   return document.createRange();
 }
 
 // Temporary range object to optimize performance computing client rects
 // from text nodes.
 Range _tempRange;
 // Hacks because ASYNC measurement is annoying when just writing a script.
@@ skipping 321 matching lines @@
   return true;
 }
 
 bool isSkippable(Node n) {
   if (!isSkippableType(n)) return false;
   return n.text.trim().length == 0;
 }
 
 void onEnd() {
   // Hideous hack to send JSON back to JS.
-  String dbJson = JSON.stringify(dbEntry);
-  // workaround bug in JSON parser.
+  String dbJson = json.stringify(dbEntry);
+  // workaround bug in json.parse.
   dbJson = dbJson.replaceAll("ZDARTIUMDOESNTESCAPESLASHNJXXXX", "\\n");
 
   // Use postMessage to end the JSON to JavaScript. TODO(jacobr): use a simple
   // isolate based Dart-JS interop solution in the future.
   window.postMessage("START_DART_MESSAGE_UNIQUE_IDENTIFIER$dbJson", "*");
 }
 
 class SectionParseResult {
   final String html;
   final String url;
@@ skipping 86 matching lines @@
 }
 
 String genPrettyHtmlFromElement(Element e) {
   e = e.clone(true);
   return genCleanHtml(e);
 }
 
 class PostOrderTraversalIterator implements Iterator<Node> {
 
   Node _next;
+  Node _current;
 
   PostOrderTraversalIterator(Node start) {
     _next = _leftMostDescendent(start);
   }
 
+  Node get current => _current;
   bool get hasNext => _next != null;
 
-  Node next() {
-    if (_next == null) return null;
-    final ret = _next;
+  bool moveNext() {
+    _current = _next;
+    if (_next == null) return false;
     if (_next.nextNode != null) {
       _next = _leftMostDescendent(_next.nextNode);
     } else {
       _next = _next.parent;
     }
-    return ret;
+    return true;
   }
 
   static Node _leftMostDescendent(Node n) {
     while (n.nodes.length > 0) {
       n = n.nodes.first;
     }
     return n;
   }
 }
 
-class PostOrderTraversal implements Iterable<Node> {
+class PostOrderTraversal extends Iterable<Node> {
   final Node _node;
   PostOrderTraversal(this._node);
 
-  Iterator<Node> iterator() => new PostOrderTraversalIterator(_node);
+  Iterator<Node> get iterator => new PostOrderTraversalIterator(_node);
 }
 
 /**
  * Estimate what content represents the first line of text within the [section]
  * range returning null if there isn't a plausible first line of text that
  * contains the string [prop].  We measure the actual rendered client rectangle
  * for the text and use heuristics defining how many pixels text can vary by
  * and still be viewed as being on the same line.
  */
 Range findFirstLine(Range section, String prop) {
@@ skipping 246 matching lines @@
         final txt = r.text.trim().split(" ")[0].toLowerCase();
         if (txt == "description") {
           helpIndex = i;
           break;
         }
         i++;
       }
 
       // Figure out which column in the table contains member names by
       // tracking how many member names each column contains.
-      final numMatches = new List<int>(i);
+      final numMatches = new List<int>.fixedLength(i);
       for (int j = 0; j < i; j++) {
         numMatches[j] = 0;
       }
 
       // Find the column that seems to have the most names that look like
       // expected properties.
       for (Element r in t.queryAll("tbody tr")) {
         ElementList row = r.elements;
         if (row.length == 0 || row.first.classes.contains(".header")) {
           continue;
@@ skipping 194 matching lines @@
     if (e is Element) {
       e.classes.add(DART_REMOVED);
     } else {
       for (Element el in e) {
         el.classes.add(DART_REMOVED);
       }
     }
   }
 }
 
-// TODO(jacobr): remove this when the dartium JSON parser handles \n correctly.
+// TODO(jacobr): remove this when the dartium JSON parse handles \n correctly.
 String JSONFIXUPHACK(String value) {
   return value.replaceAll("\n", "ZDARTIUMDOESNTESCAPESLASHNJXXXX");
 }
 
 String mozToWebkit(String name) {
   return name.replaceFirst(new RegExp("^moz"), "webkit");
 }
 
 String stripWebkit(String name) {
   return trimPrefix(name, "webkit");
@@ skipping 325 matching lines @@
   onEnd();
 }
 
 void main() {
   window.on.load.add(documentLoaded);
 }
 
 void documentLoaded(event) {
   // Load the database of expected methods and properties with an HttpRequest.
   new HttpRequest.get('${window.location}.json', (req) {
-    data = JSON.parse(req.responseText);
+    data = json.parse(req.responseText);
     dbEntry = {'members': [], 'srcUrl': pageUrl};
     run();
   });
 }