Change new List(n) to return fixed length list.

utils/apidoc/mdn/extract.dart

 import 'dart:html';
 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.
@@ skipping 730 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>.fixedLength(i);
+      final numMatches = new List<int>(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 545 matching lines @@
 }
 
 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);
     dbEntry = {'members': [], 'srcUrl': pageUrl};
     run();
   });
 }