Add all dart:html tests from the sdk to test/codegen.

test/codegen/lib/html/crypto_test.dart

+// Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+library crypto_test;
+import 'package:unittest/unittest.dart';
+import 'package:unittest/html_individual_config.dart';
+import 'dart:html';
+import 'dart:typed_data';
+
+main() {
+  useHtmlIndividualConfiguration();
+
+  group('supported', () {
+    test('supported', () {
+      expect(Crypto.supported, true);
+    });
+  });
+
+  group('functional', () {
+    if (Crypto.supported) {
+      // This will actually pass on FF since it has a Crypto API, but it is
+      // incompatible.
+      test('exists', () {
+        var crypto = window.crypto;
+        expect(crypto is Crypto, isTrue);
+      });
+
+      test('successful call', () {
+        var crypto = window.crypto;
+        var data = new Uint8List(100);
+        expect(data.every((e) => e == 0), isTrue);
+        crypto.getRandomValues(data);
+        // In theory this is flaky. However, in practice you will get 100 zeroes
+        // in a row from a cryptographically secure random number generator so
+        // rarely that we don't have to worry about it.
+        expect(data.any((e) => e != 0), isTrue);
+      });
+
+      test('type mismatch', () {
+        var crypto = window.crypto;
+        var data = new Float32List(100);
+        expect(() {
+          crypto.getRandomValues(data);
+        }, throws, reason: 'Only typed array views with integer types allowed');
+      });
+    }
+  });
+}