Add support for fields to the new dart backend.

pkg/analyzer2dart/lib/src/cps_generator.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 analyzer2dart.cps_generator;
 
 import 'package:analyzer/analyzer.dart';
 
 import 'package:compiler/src/dart_types.dart' as dart2js;
 import 'package:compiler/src/elements/elements.dart' as dart2js;
@@ skipping 40 matching lines @@
                       const <dart2js.Local>[]),
         () {
       function.parameters.forEach((analyzer.ParameterElement parameter) {
         // TODO(johnniwinther): Support "closure variables", that is variables
         // accessed from an inner function.
         irBuilder.createParameter(converter.convertElement(parameter));
       });
       // Visit the body directly to avoid processing the signature as
       // expressions.
       visit(node.body);
-      return irBuilder.buildFunctionDefinition(element, const []);
+      return irBuilder.buildFunctionDefinition(const []);
     });
   }
 
   @override
   ir.FunctionDefinition visitFunctionDeclaration(FunctionDeclaration node) {
     return handleFunctionDeclaration(node.element, node.functionExpression);
   }
 
   @override
   visitFunctionDeclarationStatement(FunctionDeclarationStatement node) {
@@ skipping 384 matching lines @@
   }
 
   @override
   ir.Primitive visitAsExpression(AsExpression node) {
     return irBuilder.buildTypeOperator(
         visit(node.expression),
         converter.convertType(node.type.type),
         isTypeTest: false);
   }
 }