dart2js: fill in the basic functionality of the startup emitter.

pkg/compiler/lib/src/js_emitter/model.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.new_js_emitter.model;
 
 import '../js/js.dart' as js show Expression, Statement, Name, Literal,
     TokenFinalizer;
 import '../constants/values.dart' show ConstantValue;
 
@@ skipping 343 matching lines @@
   // TODO(floitsch): support renamed fields.
   Field(this.element, this.name, this.accessorName,
         this.getterFlags, this.setterFlags,
         this.needsCheckedSetter);
 
   bool get needsGetter => getterFlags != 0;
   bool get needsUncheckedSetter => setterFlags != 0;
 
   bool get needsInterceptedGetter => getterFlags > 1;
   bool get needsInterceptedSetter => setterFlags > 1;
+
+  bool get needsInterceptedGetterOnReceiver => getterFlags == 2;
+  bool get needsInterceptedSetterOnReceiver => setterFlags == 2;
+
+  bool get needsInterceptedGetterOnThis => getterFlags == 3;
+  bool get needsInterceptedSetterOnThis => setterFlags == 3;
 }
 
 abstract class Method {
   /// The element should only be used during the transition to the new model.
   /// Uses indicate missing information in the model.
   final Element element;
   final js.Name name;
   final js.Expression code;
 
   Method(this.element, this.name, this.code);
@@ skipping 126 matching lines @@
               requiredParameterCount: requiredParameterCount,
               optionalParameterDefaultValues: optionalParameterDefaultValues,
               functionType: functionType);
 }
 
 class StaticStubMethod extends StubMethod implements StaticMethod {
   Holder holder;
   StaticStubMethod(js.Name name, this.holder, js.Expression code)
       : super(name, code);
 }