Mostly use Entity in InterceptorData

pkg/compiler/lib/src/js_emitter/program_builder/program_builder.dart

 // Copyright (c) 2014, 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 dart2js.js_emitter.program_builder;
 
 import '../../closure.dart' show ClosureFieldElement;
 import '../../common.dart';
 import '../../common/names.dart' show Names, Selectors;
 import '../../compiler.dart' show Compiler;
@@ skipping 813 matching lines @@
 
     String holderName =
         namer.globalObjectForLibrary(helpers.interceptorsLibrary);
     // TODO(floitsch): we shouldn't update the registry in the middle of
     // generating the interceptor methods.
     Holder holder = _registry.registerHolder(holderName);
 
     Iterable<js.Name> names =
         backend.oneShotInterceptorData.specializedGetInterceptorNames;
     return names.map((js.Name name) {
-      Set<ClassElement> classes =
+      Set<ClassEntity> classes =
           backend.oneShotInterceptorData.getSpecializedGetInterceptorsFor(name);
       js.Expression code = stubGenerator.generateGetInterceptorMethod(classes);
       return new StaticStubMethod(name, holder, code);
     });
   }
 
   List<Field> _buildFields(Element holder,
       {bool visitStatics, bool isHolderInterceptedClass: false}) {
     List<Field> fields = <Field>[];
     new FieldVisitor(_compiler, namer, closedWorld)
@@ skipping 125 matching lines @@
       Constant constant = new Constant(name, holder, constantValue);
       _constants[constantValue] = constant;
     }
   }
 
   Holder _registerStaticStateHolder() {
     return _registry.registerHolder(namer.staticStateHolder,
         isStaticStateHolder: true);
   }
 }