Removing safe_dom_test

tests/html/safe_dom_test.dart

-library safe_dom_test;
-
-import 'dart:async';
-import 'dart:html';
-import '../../pkg/unittest/lib/unittest.dart';
-import '../../pkg/unittest/lib/html_config.dart';
-
-main() {
-  useHtmlConfiguration();
-
-  // Checks to see if any illegal properties were set via script.
-  var checkerScript = '''
-  window.addEventListener('message', function(e) {
-    if (e.data == 'check_unsafe') {
-      if (window.unsafe_value) {
-        window.postMessage('unsafe_check_failed', '*');
-      } else {
-        window.postMessage('unsafe_check_passed', '*');
-      }
-      //window.alert('checking!');
-    }
-  }, false);
-  ''';
-
-  var script = new ScriptElement();
-  script.text = checkerScript;
-  document.body.append(script);
-
-  var unsafeString =
-      '<img src="_.png" onerror="javascript:window.unsafe_value=1;" crap="1"/>';
-
-  test('Safe DOM', () {
-    var fragment = createContextualFragment(unsafeString);
-
-    expect(isSafe(), completion(true),
-        reason: 'Expected no unsafe code executed.');
-  });
-
-  // Make sure that scripts did get executed, so we know our detection works.
-  test('Unsafe Execution', () {
-    var div = new DivElement();
-    div.unsafeInnerHtml = unsafeString;
-    // Crashing DRT ??
-    // var fragment = createContextualFragment(unsafeString);
-    // div.append(fragment);
-    // document.body.append(div)
-
-    expect(isSafe(), completion(false),
-        reason: 'Expected unsafe code was executed.');
-  });
-
-  test('Validity', () {
-    var fragment = createContextualFragment('<span>content</span>');
-    var div = new DivElement();
-    div.append(fragment);
-
-    expect(div.nodes.length, 1);
-    expect(div.nodes[0] is SpanElement, isTrue);
-  });
-}
-
-DocumentFragment createContextualFragment(String html, [String contextTag]) {
-  var doc = document.implementation.createHtmlDocument('');
-
-  var contextElement;
-  if (contextTag != null) {
-    contextElement = doc.createElement(contextTag);
-  } else {
-    contextElement = doc.body;
-  }
-
-  if (Range.supportsCreateContextualFragment) {
-    var range = doc.createRange();
-    range.selectNode(contextElement);
-    return range.createContextualFragment(html);
-  } else {
-    contextElement.unsafeInnerHtml = html;
-    var fragment = new DocumentFragment();;
-    while (contextElement.firstChild != null) {
-      fragment.append(contextElement.firstChild);
-    }
-    return fragment;
-  }
-}
-
-// Delay to wait for the image load to fail.
-const Duration imageLoadDelay = const Duration(milliseconds: 500);
-
-Future<bool> isSafe() {
-  return new Future.delayed(imageLoadDelay).then((_) {
-    window.postMessage('check_unsafe', '*');
-  }).then((_) {
-    return window.onMessage.where(
-        (e) => e.data.startsWith('unsafe_check')).first;
-  }).then((e) {
-    return e.data == 'unsafe_check_passed';
-  });
-}