Don't run HTML tests with the new task model.

pkg/analyzer/test/generated/all_the_rest_test.dart

 // Copyright (c) 2014, 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.
 
 // This code was auto-generated, is not intended to be edited, and is subject to
 // significant change. Please see the README file for more information.
 
 library engine.all_the_rest_test;
 
 import 'package:analyzer/file_system/file_system.dart';
@@ skipping 48 matching lines @@
   runReflectiveTests(DirectoryBasedSourceContainerTest);
   runReflectiveTests(ElementBuilderTest);
   runReflectiveTests(ElementLocatorTest);
   runReflectiveTests(EnumMemberBuilderTest);
   runReflectiveTests(ErrorReporterTest);
   runReflectiveTests(ErrorSeverityTest);
   runReflectiveTests(ExitDetectorTest);
   runReflectiveTests(ExitDetectorTest2);
   runReflectiveTests(FileBasedSourceTest);
   runReflectiveTests(FileUriResolverTest);
-  runReflectiveTests(HtmlParserTest);
-  runReflectiveTests(HtmlTagInfoBuilderTest);
-  runReflectiveTests(HtmlUnitBuilderTest);
-  runReflectiveTests(HtmlWarningCodeTest);
+  if (!AnalysisEngine.instance.useTaskModel) {
+    runReflectiveTests(HtmlParserTest);
+    runReflectiveTests(HtmlTagInfoBuilderTest);
+    runReflectiveTests(HtmlUnitBuilderTest);
+    runReflectiveTests(HtmlWarningCodeTest);
+  }
   runReflectiveTests(ReferenceFinderTest);
   runReflectiveTests(SDKLibrariesReaderTest);
   runReflectiveTests(SourceFactoryTest);
   runReflectiveTests(ToSourceVisitorTest);
   runReflectiveTests(UriKindTest);
   runReflectiveTests(StringScannerTest);
 }
 
 abstract class AbstractScannerTest {
   ht.AbstractScanner newScanner(String input);
@@ skipping 8669 matching lines @@
     if (_expectedExternalScriptName == null) {
       expect(scriptSource, isNull, reason: "script $scriptIndex");
     } else {
       expect(scriptSource, isNotNull, reason: "script $scriptIndex");
       String actualExternalScriptName = scriptSource.shortName;
       expect(actualExternalScriptName, _expectedExternalScriptName,
           reason: "script $scriptIndex");
     }
   }
 }