Disallow include_tags and exclude_tags in a test context.

lib/src/runner/configuration/load.dart

 // Copyright (c) 2016, 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.
 
 import 'dart:io';
 
 import 'package:boolean_selector/boolean_selector.dart';
 import 'package:glob/glob.dart';
 import 'package:path/path.dart' as p;
 import 'package:source_span/source_span.dart';
@@ skipping 117 matching lines @@
   /// runner-level configuration fields.
   Configuration _loadRunnerConfig() {
     if (!_runnerConfig) {
       _disallow("reporter");
       _disallow("pub_serve");
       _disallow("concurrency");
       _disallow("platforms");
       _disallow("paths");
       _disallow("filename");
       _disallow("add_presets");
+      _disallow("include_tags");
+      _disallow("exclude_tags");
       return Configuration.empty;
     }
 
     var reporter = _getString("reporter");
     if (reporter != null && !allReporters.contains(reporter)) {
       _error('Unknown reporter "$reporter".', "reporter");
     }
 
     var pubServePort = _getInt("pub_serve");
     var concurrency = _getInt("concurrency");
@@ skipping 185 matching lines @@
     if (!_document.containsKey(field)) return;
     _error("$field isn't supported here.", field);
   }
 
   /// Throws a [SourceSpanFormatException] with [message] about [field].
   void _error(String message, String field) {
     throw new SourceSpanFormatException(
         message, _document.nodes[field].span, _source);
   }
 }