Fix some issues in element serialization.

tests/compiler/dart2js/serialization_test.dart

 // Copyright (c) 2015, 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.serialization_test;
 
 import 'dart:io';
 import 'memory_compiler.dart';
 import 'package:async_helper/async_helper.dart';
 import 'package:compiler/src/commandline_options.dart';
@@ skipping 461 matching lines @@
           element1.sourcePosition, element2.sourcePosition);
     checkTypes(
         element1, element2, 'type',
         element1.type, element2.type);
     checkListEquivalence(
         element1, element2, 'parameters',
         element1.parameters, element2.parameters,
         checkElementProperties);
     check(element1, element2, 'isOperator',
           element1.isOperator, element2.isOperator);
+    check(
+        element1, element2, 'asyncMarker',
+        element1.asyncMarker,
+        element2.asyncMarker);
 
     checkElementIdentities(
         element1, element2, 'library',
         element1.library, element2.library);
     checkElementIdentities(
         element1, element2, 'compilationUnit',
         element1.compilationUnit, element2.compilationUnit);
     checkElementIdentities(
         element1, element2, 'enclosingClass',
         element1.enclosingClass, element2.enclosingClass);
+
+    check(
+        element1, element2, 'functionSignature.type',
+        element1.functionSignature.type,
+        element2.functionSignature.type,
+        areTypesEquivalent);
+    checkElementLists(
+        element1, element2, 'functionSignature.requiredParameters',
+        element1.functionSignature.requiredParameters,
+        element2.functionSignature.requiredParameters);
+    checkElementLists(
+        element1, element2, 'functionSignature.optionalParameters',
+        element1.functionSignature.optionalParameters,
+        element2.functionSignature.optionalParameters);
+    check(
+        element1, element2, 'functionSignature.requiredParameterCount',
+        element1.functionSignature.requiredParameterCount,
+        element2.functionSignature.requiredParameterCount);
+    check(
+        element1, element2, 'functionSignature.optionalParameterCount',
+        element1.functionSignature.optionalParameterCount,
+        element2.functionSignature.optionalParameterCount);
+    check(
+        element1, element2, 'functionSignature.optionalParametersAreNamed',
+        element1.functionSignature.optionalParametersAreNamed,
+        element2.functionSignature.optionalParametersAreNamed);
+    check(
+        element1, element2, 'functionSignature.hasOptionalParameters',
+        element1.functionSignature.hasOptionalParameters,
+        element2.functionSignature.hasOptionalParameters);
+    check(
+        element1, element2, 'functionSignature.parameterCount',
+        element1.functionSignature.parameterCount,
+        element2.functionSignature.parameterCount);
+    checkElementLists(
+        element1, element2, 'functionSignature.orderedOptionalParameters',
+        element1.functionSignature.orderedOptionalParameters,
+        element2.functionSignature.orderedOptionalParameters);
   }
 
   @override
   void visitConstructorElement(ConstructorElement element1,
                                ConstructorElement element2) {
     checkElementIdentities(null, null, null, element1, element2);
     checkElementIdentities(
         element1, element2, 'enclosingClass',
         element1.enclosingClass, element2.enclosingClass);
     check(
@@ skipping 76 matching lines @@
           element1.sourcePosition, element2.sourcePosition);
     checkTypes(
         element1, element2, 'type',
         element1.type, element2.type);
     check(
         element1, element2, 'isOptional',
         element1.isOptional, element2.isOptional);
     check(
         element1, element2, 'isNamed',
         element1.isNamed, element2.isNamed);
+    check(
+        element1, element2, 'isFinal',
+        element1.isFinal, element2.isFinal);
     check(element1, element2, 'name', element1.name, element2.name);
     if (element1.isOptional) {
       checkConstants(
           element1, element2, 'constant',
           element1.constant, element2.constant);
     }
     checkElementIdentities(
         element1, element2, 'compilationUnit',
         element1.compilationUnit, element2.compilationUnit);
   }
@@ skipping 33 matching lines @@
   void visitPrefixElement(PrefixElement element1, PrefixElement element2) {
     check(
         element1, element2, 'isDeferred',
         element1.isDeferred, element2.isDeferred);
     checkElementIdentities(
         element1, element2, 'importedLibrary',
         element1.deferredImport, element2.deferredImport);
     // TODO(johnniwinther): Check members.
   }
 }