Issue 24552. Disable reporting HTML parsing errors.

pkg/analyzer/lib/src/task/html.dart

 // Copyright (c) 2015, 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 analyzer.src.task.html;
 
 import 'dart:collection';
 
 import 'package:analyzer/src/context/cache.dart';
 import 'package:analyzer/src/generated/engine.dart' hide AnalysisTask;
@@ skipping 301 matching lines @@
             target.source, 0, 0, ScannerErrorCode.UNABLE_GET_CONTENT, [message])
       ];
       outputs[LINE_INFO] = new LineInfo(<int>[0]);
     } else {
       HtmlParser parser = new HtmlParser(content, generateSpans: true);
       parser.compatMode = 'quirks';
       Document document = parser.parse();
       //
       // Convert errors.
       //
-      List<ParseError> parseErrors = parser.errors;
       List<AnalysisError> errors = <AnalysisError>[];
-      for (ParseError parseError in parseErrors) {
-        if (parseError.errorCode == 'expected-doctype-but-got-start-tag') {
-          continue;
-        }
-        SourceSpan span = parseError.span;
-        errors.add(new AnalysisError(target.source, span.start.offset,
-            span.length, HtmlErrorCode.PARSE_ERROR, [parseError.message]));
-      }
+      // TODO(scheglov) https://github.com/dart-lang/sdk/issues/24643
+//      List<ParseError> parseErrors = parser.errors;
+//      for (ParseError parseError in parseErrors) {
+//        if (parseError.errorCode == 'expected-doctype-but-got-start-tag') {
+//          continue;
+//        }
+//        SourceSpan span = parseError.span;
+//        errors.add(new AnalysisError(target.source, span.start.offset,
+//            span.length, HtmlErrorCode.PARSE_ERROR, [parseError.message]));
+//      }
       //
       // Record outputs.
       //
       outputs[HTML_DOCUMENT] = document;
       outputs[HTML_DOCUMENT_ERRORS] = errors;
       outputs[LINE_INFO] = _computeLineInfo(content);
     }
   }
 
   /**
@@ skipping 52 matching lines @@
    * The content of the fragment.
    */
   final String content;
 
   /**
    * Initialize a newly created script fragment to have the given [offset] and
    * [content].
    */
   ScriptFragment(this.offset, this.line, this.column, this.content);
 }