Revert "First rev of Safe DOM"

tests/html/custom_elements_test.dart

Index: tests/html/custom_elements_test.dart
diff --git a/tests/html/custom_elements_test.dart b/tests/html/custom_elements_test.dart
index 57019a4e555fe9319f40dd3df820a28e94de1015..6a369fd3396a41b27cb99cbc2d6d7c74c9f73fdb 100644
--- a/tests/html/custom_elements_test.dart
+++ b/tests/html/custom_elements_test.dart
@@ -7,7 +7,6 @@ import 'dart:async';
 import 'dart:html';
 import 'package:unittest/html_individual_config.dart';
 import 'package:unittest/unittest.dart';
-import 'utils.dart';
 
 class CustomMixin {
   var mixinMethodCalled;
@@ -145,9 +144,7 @@ main() {
       var tag = nextTag;
       document.register(tag, CustomType);
       var element = new DivElement();
-      element.setInnerHtml('<$tag></$tag>',
-          treeSanitizer: new NullTreeSanitizer());
-	  Platform.upgradeCustomElements(element);
+      element.innerHtml = '<$tag></$tag>';
       document.body.nodes.add(element);
       var queried = query(tag);
 
@@ -160,9 +157,7 @@ main() {
       var tag = nextTag;
       document.register(tag, CustomType);
       var element = new DivElement();
-      element.setInnerHtml('<$tag id="someid"></$tag>',
-          treeSanitizer: new NullTreeSanitizer());
-	  Platform.upgradeCustomElements(element);
+      element.innerHtml = '<$tag id="someid"></$tag>';
       document.body.nodes.add(element);
       var queried = query('#someid');
 
@@ -178,8 +173,7 @@ main() {
       var tag = nextTag;
       document.register(tag, CustomType);
       var element = new DivElement();
-      element.setInnerHtml('<$tag></$tag>',
-          treeSanitizer: new NullTreeSanitizer());
+      element.innerHtml = '<$tag></$tag>';
       Platform.upgradeCustomElements(element);
       document.body.nodes.add(element);
       expect(customCreatedCount, oldCount + 1);