Support parameter access in analyzer2dart.

pkg/analyzer2dart/lib/src/element_converter.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.
 
 /// Convertion of elements between the analyzer element model and the dart2js
 /// element model.
 
 library analyzer2dart.element_converter;
 
 import 'package:compiler/implementation/elements/elements.dart' as dart2js;
@@ skipping 90 matching lines @@
   bool get isPatch => false;
 
   @override
   bool get isPatched => false;
 
   @override
   dart2js.LibraryElement get library {
     return converter.convertElement(element.library);
   }
 
+  @override
+  bool get isLocal => false;
+
   unsupported(String method) {
     throw new UnsupportedError(
         "'$method' is unsupported on $this ($runtimeType)");
   }
 
-
   @override
   bool get isFinal => unsupported('isFinal');
 
   @override
   bool get isStatic => unsupported('isStatic');
 
   @override
   bool isForeign(_) => unsupported('isForeign');
 
   @override
@@ skipping 330 matching lines @@
   @override
   get treeElements => unsupported('treeElements');
 
   @override
   dart2js.FunctionType get type => functionSignature.type;
 }
 
 class ParameterElementY extends ElementY implements dart2js.ParameterElement {
   analyzer.ParameterElement get element => super.element;
 
+  @override
   dart2js.ElementKind get kind => dart2js.ElementKind.PARAMETER;
 
   // TODO(johnniwinther): Convert the type from [element].
+  @override
   dart2js.DartType get type => const dart2js.DynamicType();
 
   // TODO(johnniwinther): Avoid the need for this.
+  @override
   dart2js.FunctionSignature get functionSignature => null;
 
+  @override
+  bool get isLocal => true;
+
+  @override
+  bool get isStatic => false;
+
   ParameterElementY(ElementConverter converter,
                     analyzer.ParameterElement element)
       : super(converter, element) {
     assert(!element.isInitializingFormal);
   }
 
   @override
   get executableContext => unsupported('executableContext');
 
   @override
@@ skipping 16 matching lines @@
 
   @override
   get node => unsupported('node');
 
   @override
   get resolvedAst => unsupported('resolvedAst');
 
   @override
   get treeElements => unsupported('treeElements');
 }