added bool type to named args in lib/io and lib/_internal

sdk/lib/_internal/compiler/implementation/elements/elements.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 elements;
 
 
 import '../tree/tree.dart';
 import '../util/util.dart';
 import '../resolution/resolution.dart';
@@ skipping 864 matching lines @@
 
   Element validateConstructorLookupResults(Selector selector,
                                            Element result,
                                            Element noMatch(Element));
 
   Element lookupConstructor(Selector selector, [Element noMatch(Element)]);
   Element lookupFactoryConstructor(Selector selector,
                                    [Element noMatch(Element)]);
 
   void forEachMember(void f(ClassElement enclosingClass, Element member),
-                     {includeBackendMembers: false,
-                      includeSuperAndInjectedMembers: false});
+                     {bool includeBackendMembers: false,
+                      bool includeSuperAndInjectedMembers: false});
 
   void forEachInstanceField(void f(ClassElement enclosingClass, Element field),
-                            {includeSuperAndInjectedMembers: false});
+                            {bool includeSuperAndInjectedMembers: false});
 
   /// Similar to [forEachInstanceField] but visits static fields.
   void forEachStaticField(void f(ClassElement enclosingClass, Element field));
 
   void forEachBackendMember(void f(Element member));
 
   Link<DartType> computeTypeParameters(Compiler compiler);
 }
 
 abstract class MixinApplicationElement extends ClassElement {
@@ skipping 47 matching lines @@
   int get resolutionState;
   Token get beginToken;
   Token get endToken;
 
   // TODO(kasperl): Try to get rid of these.
   void set annotatedElement(Element value);
   void set resolutionState(int value);
 
   MetadataAnnotation ensureResolved(Compiler compiler);
 }