unittest step2: bye bye to multiple entrypoints for unittest

lib/unittest/unittest_html.dart

-// Copyright (c) 2011, 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.
-
-/**
- * A simple unit test library for running tests in a browser.
- */
-#library('unittest');
-
-#import('dart:html');
-#import('dart:isolate');
-
-#source('config.dart');
-#source('shared.dart');
-#source('html_print.dart');
-
-/** Whether this is run within dartium layout tests. */
-bool _isLayoutTest = false;
-
-void forLayoutTests() {
-  _isLayoutTest = true;
-}
-
-class PlatformConfiguration extends Configuration {
-  // TODO(rnystrom): Get rid of this if we get canonical closures for methods.
-  EventListener _onErrorClosure;
-
-  void onInit() {
-    _onErrorClosure = (e) { _onError(e); };
-  }
-
-  void _onError(e) {
-   if (_currentTest < _tests.length) {
-      final testCase = _tests[_currentTest];
-      // TODO(vsm): figure out how to expose the stack trace here
-      // Currently e.message works in dartium, but not in dartc.
-      testCase.error('(DOM callback has errors) Caught ${e}', '');
-      _state = _UNCAUGHT_ERROR;
-      if (testCase.callbacks > 0) {
-        _currentTest++;
-        _testRunner();
-      }
-    }
-  }
-
-  void onStart() {
-    window.postMessage('unittest-suite-wait-for-done', '*');
-    // Listen for uncaught errors.
-    window.on.error.add(_onErrorClosure);
-  }
-
-  void onTestResult(TestCase testCase) {}
-
-  void onDone(int passed, int failed, int errors, List<TestCase> results) {
-    window.on.error.remove(_onErrorClosure);
-    _showResultsInPage(passed, failed, errors, results, _isLayoutTest);
-    window.postMessage('unittest-suite-done', '*');
-  }
-}