Add library mapping.

dart/frog/tests/leg/src/mock_compiler.dart

 // Copyright (c) 2012, 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('mock_compiler');
 
 #import("../../../../lib/uri/uri.dart");
 
 #import("../../../leg/elements/elements.dart");
-#import("../../../leg/io/io.dart", prefix: 'io');
 #import("../../../leg/leg.dart");
 #import("../../../leg/tree/tree.dart");
 #import("../../../leg/util/util.dart");
 #import("parser_helper.dart");
 
 class WarningMessage {
   Node node;
   Message message;
   WarningMessage(this.node, this.message);
 
@@ skipping 29 matching lines @@
   List<WarningMessage> warnings;
   List<WarningMessage> errors;
   final Map<String, String> sources;
   Node parsedTree;
   WorkItem lastBailoutWork;
 
   MockCompiler([String coreSource = DEFAULT_CORELIB,
                 String helperSource = DEFAULT_HELPERLIB])
       : warnings = [], errors = [],
         sources = new Map<String, String>(),
-        super.withCurrentDirectory(io.getCurrentDirectory()) {
+        super() {
     Uri uri = new Uri(scheme: "source");
     var script = new Script(uri, new MockFile(coreSource));
     coreLibrary = new LibraryElement(script);
     parseScript(coreSource, coreLibrary);
     script = new Script(uri, new MockFile(helperSource));
     jsHelperLibrary = new LibraryElement(script);
     parseScript(helperSource, jsHelperLibrary);
     scanner.importLibrary(jsHelperLibrary, coreLibrary, null);
     mainApp = mockLibrary(this, "");
     initializeSpecialClasses();
@@ skipping 116 matching lines @@
   importLibrary(library, compiler.coreLibrary, compiler);
   return library;
 }
 
 class StringScript extends Script {
   final String code;
   StringScript(this.code) : super(null, null);
   String get text() => code;
   String get name() => "mock script";
 }