Remove bad URI (issue 25596)

pkg/analyzer/lib/analyzer.dart

 // Copyright (c) 2013, 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;
 
 import 'dart:io';
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/src/dart/scanner/reader.dart';
@@ skipping 59 matching lines @@
 /// Stops parsing when the first non-directive is encountered. The rest of the
 /// string will not be parsed.
 ///
 /// If [name] is passed, it's used in error messages as the name of the code
 /// being parsed.
 ///
 /// Throws an [AnalyzerErrorGroup] if any errors occurred, unless
 /// [suppressErrors] is `true`, in which case any errors are discarded.
 CompilationUnit parseDirectives(String contents,
     {String name, bool suppressErrors: false}) {
-  if (name == null) name = '<unknown source>';
   var source = new StringSource(contents, name);
   var errorCollector = new _ErrorCollector();
   var reader = new CharSequenceReader(contents);
   var scanner = new Scanner(source, reader, errorCollector);
   var token = scanner.tokenize();
   var parser = new Parser(source, errorCollector);
   var unit = parser.parseDirectives(token);
   unit.lineInfo = new LineInfo(scanner.lineStarts);
 
   if (errorCollector.hasErrors && !suppressErrors) throw errorCollector.group;
@@ skipping 31 matching lines @@
   /// The group of errors collected.
   AnalyzerErrorGroup get group =>
       new AnalyzerErrorGroup.fromAnalysisErrors(_errors);
 
   /// Whether any errors where collected.
   bool get hasErrors => !_errors.isEmpty;
 
   @override
   void onError(AnalysisError error) => _errors.add(error);
 }