Reapply "Rename mappedBy to map."

pkg/unittest/lib/src/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.
 
 part of unittest;
 
 /**
  * Hooks to configure the unittest library for different platforms. This class
  * implements the API in a platform-independent way. Tests that want to take
  * advantage of the platform can create a subclass and override methods from
@@ skipping 128 matching lines @@
     } else {
       _receivePort.close();
       throw new Exception('Some tests failed.');
     }
   }
 
   String _indent(String str) {
     // TODO(nweiz): Use this simpler code once issue 2980 is fixed.
     // return str.replaceAll(new RegExp("^", multiLine: true), "  ");
 
-    return Strings.join(str.split("\n").mappedBy((line) => "  $line"), "\n");
+    return Strings.join(str.split("\n").map((line) => "  $line"), "\n");
   }
 
   /** Handle errors that happen outside the tests. */
   // TODO(vsm): figure out how to expose the stack trace here
   // Currently e.message works in dartium, but not in dartc.
   handleExternalError(e, String message) =>
       _reportTestError('$message\nCaught $e', '');
 
   /**
    * Send messages to the test controller code (see 'test_controller.js'). This
    * is only needed to support browser tests with dart2js. Note: we could wrap
    * tests and send the appropriate messages to the controller through the
    * wrapper, but using wrappers has a noticeable overhead in the testing bots,
    * so we use this approach instead.
    *
    * Configurations that will not run in DRT (such as vm_config and
    * compact_vm_config), can safely override this method to avoid printing extra
    * mesages in the console.
    */
   // TODO(sigmund): find a way to unify notifyController and _postMessage
   void notifyController(String message) {
   }
 
   _postMessage(String message) {
     // In dart2js browser tests, the JavaScript-based test controller
     // intercepts calls to print and listens for "secret" messages.
     print(message);
   }
 }