Things to unfork.

LayoutTests/dart/dom/DOMMap.dart

-#import('../../../../../dart/client/testing/unittest/unittest.dart');
-#import('dart:dom');
-
-main() {
-  forLayoutTests();
-  test('ElementsIdentity', () {
-    HTMLDivElement div = document.createElement('div');
-    div.id = 'test';
-    document.body.appendChild(div);
-
-    HTMLElement element = document.getElementById('test');
-    Expect.identical(div, element);
-  });
-  test('TwoIsolates', () {
-    // Test that we can access the same DOM nodes from different isolates.
-    // FIXME: uncomment when we have DOM isolates.
-    /*
-    Isolate isolate = new TestIsolate().spawn().then((SendPort port) {
-      HTMLElement testDiv = document.getElementById('test_div');
-      Expect.equals('Hello from Dart Frame', testDiv.innerHTML);
-      document.body.removeChild(testDiv);
-    });
-    */
-  });
-}
-
-class TestIsolate extends Isolate {
-  TestIsolate() : super.heavy();
-
-  void main() {
-    HTMLElement element = document.createElement('div');
-    element.id = 'test_div';
-    element.innerHTML = 'Hello from Dart isolate';
-    document.body.appendChild(element);
-  }
-}