Revert "Patched in Dartium JsInterop"

tests/html/fontface_loaded_test.dart

 library fontface_loaded_test;
 
 import 'package:unittest/unittest.dart';
 import 'package:unittest/html_config.dart';
 
 import 'dart:async';
 import 'dart:isolate';
 import 'dart:html';
 
 class NullTreeSanitizer implements NodeTreeSanitizer {
-  void sanitizeTree(Node node) {}
+    void sanitizeTree(Node node) {}
 }
 
 main() {
   useHtmlConfiguration();
 
-  var style = new Element.html(
-      '''
+  var style = new Element.html('''
       <style>
       @font-face {
         font-family: 'Ahem';
-        src: url(/root_dart/tests/html/Ahem.ttf);
+        src: url(../../resources/Ahem.ttf);
         font-style: italic;
         font-weight: 300;
         unicode-range: U+0-3FF;
         font-variant: small-caps;
         -webkit-font-feature-settings: "dlig" 1;
         /* font-stretch property is not supported */
       }
       </style>
-      ''',
-      treeSanitizer: new NullTreeSanitizer());
+      ''', treeSanitizer: new NullTreeSanitizer());
   document.head.append(style);
 
+
   test('document fonts - temporary', () {
     var atLeastOneFont = false;
-    var loaded = [];
     document.fonts.forEach((FontFace fontFace, _, __) {
       atLeastOneFont = true;
       Future f1 = fontFace.loaded;
       Future f2 = fontFace.loaded;
-      loaded.add(fontFace.load());
-      loaded.add(f1);
-      loaded.add(f2);
+      expect(f1, equals(f2)); // Repeated calls should answer the same Future.
+
+      expect(fontFace.load(), throws);
     });
     expect(atLeastOneFont, isTrue);
-    return Future.wait(loaded).then(expectAsync((_) {
-      document.fonts.forEach((fontFace, _, __) {
-        expect(fontFace.status, 'loaded');
-      });
-    }));
   });
 }