Revert "Rename mappedBy to map."

tests/compiler/dart2js/type_checker_test.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.
 
 import '../../../sdk/lib/_internal/compiler/implementation/elements/elements.dart';
 import '../../../sdk/lib/_internal/compiler/implementation/tree/tree.dart';
 import '../../../sdk/lib/_internal/compiler/implementation/util/util.dart';
 import 'mock_compiler.dart';
 import 'parser_helper.dart';
 
@@ skipping 420 matching lines @@
   // (in2,{nm2} -> out2).
   expect(bool value, List<DartType> in1, Map<String,DartType> nm1,
                      List<DartType> in2, Map<String,DartType> nm2) {
 
     SourceString convertString(String string) => new SourceString(string);
     int compareString(a, b) => a.compareTo(b);
 
     Link<SourceString> createNames(Map<String,DartType> nm) {
       List<String> nmSorted = new List<String>.from(nm.keys)..sort();
       List<SourceString> nmSourceStrings =
-          nmSorted.map((string) => new SourceString(string));
+          nmSorted.mappedBy((string) => new SourceString(string));
       return new Link<SourceString>.fromList(nmSourceStrings);
     }
 
     Link<DartType> createTypes(Map<String,DartType> nm,
                                Link<SourceString> names) {
       var types = new LinkBuilder<DartType>();
       for (SourceString name in names) {
         types.addLast(nm[name.slowToString()]);
       }
       return types.toLink();
@@ skipping 149 matching lines @@
   Node node = listener.popNode();
   classElement.ensureResolved(compiler);
   TreeElements elements = compiler.resolveNodeStatement(node, classElement);
   TypeCheckerVisitor checker = new TypeCheckerVisitor(compiler, elements,
                                                                 types);
   compiler.clearWarnings();
   checker.currentClass = classElement;
   checker.analyze(node);
   compareWarningKinds(text, expectedWarnings, compiler.warnings);
 }