Introduce FieldParameterElement.

frog/leg/compiler.dart

 // Copyright (c) 2012, 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.
 
 class WorkItem {
   final Element element;
   TreeElements resolutionTree;
   Function run;
   Map<int, BailoutInfo> bailouts = null;
   bool allowSpeculativeOptimization = true;
@@ skipping 250 matching lines @@
   }
 
   TreeElements analyze(WorkItem work) {
     work.resolutionTree = analyzeElement(work.element);
     return work.resolutionTree;
   }
 
   String codegen(WorkItem work) {
     String code;
     if (work.element.kind == ElementKind.FIELD
-        || work.element.kind == ElementKind.PARAMETER) {
+        || work.element.kind == ElementKind.PARAMETER
+        || work.element.kind == ElementKind.FIELD_PARAMETER) {
       constantHandler.compileWorkItem(work);
       return null;
     } else {
       HGraph graph = builder.build(work);
       optimizer.optimize(work, graph);
       code = generator.generate(work, graph);
       universe.addGeneratedCode(work, code);
       return code;
     }
   }
@@ skipping 193 matching lines @@
   }
 }
 
 class SourceSpan {
   final Uri uri;
   final int begin;
   final int end;
 
   const SourceSpan(this.uri, this.begin, this.end);
 }