Enable frong testing components.

tests/corelib/test_config.dart

 // Copyright (c) 2011, 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("corelib_test_config");
 
 #import("../../tools/testing/dart/test_runner.dart");
 #import("../../tools/testing/dart/status_file_parser.dart");
 
 class CorelibTestSuite {
   String directoryPath = "tests/corelib/src";
   final String statusFilePath = "tests/corelib/corelib.status";
   Function doTest;
   Function doDone;
   String shellPath;
   String pathSeparator;
   Map configuration;
   TestExpectationsMap testExpectationsMap;
 
   CorelibTestSuite(Map this.configuration) {
     shellPath = getDartShellFileName(configuration) ;
     pathSeparator = new Platform().pathSeparator();
   }
 
   void forEachTest(Function onTest, [Function onDone = null]) {
     doTest = onTest;
-    doDone = onDone;
+    doDone = (ignore) => onDone();
 
     // Read test expectations from status file.
     testExpectationsMap = ReadTestExpectations(statusFilePath, configuration);
 
     processDirectory();
   }
 
   void processDirectory() {
     directoryPath = getDirname(directoryPath);
     Directory dir = new Directory(directoryPath);
@@ skipping 11 matching lines @@
     int start = filename.lastIndexOf(pathSeparator);
     String testName = filename.substring(start + 1, filename.length - 5);
     Set<String> expectations = testExpectationsMap.expectations(testName);
 
     // TODO(whesse): Skip files with internal directives, and multipart files,
     //               until they are handled correctly.
     if (expectations.contains(SKIP)) return;
 
     List args = ["--ignore-unrecognized-flags"];
     if (configuration["checked"]) {
-      args.add("--enable-type-checks");
+      args.add("--enable_type_checks");
+    }
+    if (configuration["component"] == "leg") {
+      args.add("--enable_leg");
     }
     args.add(filename);
 
     doTest(new TestCase(testName,
                         shellPath,
                         args,
+                        configuration["timeout"],
                         completeHandler,
                         expectations));
   }
   
   void completeHandler(TestCase testCase) {
   }
 }