Fix too generic type for 'implementsFunction'.

pkg/compiler/lib/src/serialization/modelz.dart

 // Copyright (c) 2015, 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.
 
 /// Implementation of the element model used for deserialiation.
 ///
 /// These classes are created by [ElementDeserializer] triggered by the
 /// [Deserializer].
 
 library dart2js.serialization.modelz;
 
 import '../common.dart';
 import '../common/resolution.dart' show
     Resolution;
 import '../compiler.dart'
     show Compiler;
 import '../constants/constructors.dart';
 import '../constants/expressions.dart';
+import '../core_types.dart';
 import '../dart_types.dart';
 import '../elements/elements.dart';
 import '../elements/modelx.dart' show
     FunctionSignatureX;
 import '../elements/common.dart';
 import '../elements/visitor.dart';
 import '../io/source_file.dart';
 import '../ordered_typeset.dart';
 import '../resolution/class_members.dart' as class_members;
 import '../resolution/tree_elements.dart' show
@@ skipping 817 matching lines @@
   @override
   bool hasFieldShadowedBy(Element fieldMember) => _unsupported('');
 
   @override
   bool get hasIncompleteHierarchy => _unsupported('hasIncompleteHierarchy');
 
   @override
   bool get hasLocalScopeMembers => _unsupported('hasLocalScopeMembers');
 
   @override
-  bool implementsFunction(Compiler compiler) {
+  bool implementsFunction(CoreClasses coreClasses) {
     return _unsupported('implementsFunction');
   }
 
   @override
   Link<DartType> get interfaces {
     if (_interfaces == null) {
       _interfaces = toLink(
           _decoder.getTypes(Key.INTERFACES, isOptional: true));
     }
     return _interfaces;
@@ skipping 698 matching lines @@
     return _isDeferred;
   }
 
   @override
   ElementKind get kind => ElementKind.PREFIX;
 
   @override
   Element lookupLocalMember(String memberName) {
     return _unsupported('lookupLocalMember');
   }
-}
+}