Compute function types together with the parameters.

lib/compiler/implementation/native_emitter.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 NativeEmitter {
 
   Compiler compiler;
   StringBuffer nativeBuffer;
 
   // Classes that participate in dynamic dispatch. These are the
@@ skipping 131 matching lines @@
     if (hasUsedSelectors) classesWithDynamicDispatch.add(classElement);
   }
 
   List<ClassElement> getDirectSubclasses(ClassElement cls) {
     List<ClassElement> result = directSubtypes[cls];
     return result === null ? const<ClassElement>[] : result;
   }
 
   void potentiallyConvertDartClosuresToJs(StringBuffer code,
                                           FunctionElement member) {
-    FunctionParameters parameters = member.computeParameters(compiler);
+    FunctionSignature parameters = member.computeSignature(compiler);
     Element converter =
         compiler.findHelper(const SourceString('convertDartClosureToJS'));
     String closureConverter = compiler.namer.isolateAccess(converter);
     parameters.forEachParameter((Element parameter) {
       Type type = parameter.computeType(compiler);
       if (type is FunctionType) {
         String name = parameter.name.slowToString();
         code.add('  $name = $closureConverter($name);\n');
       }
     });
@@ skipping 208 matching lines @@
     String toStringName = compiler.namer.instanceMethodName(
         null, const SourceString('toString'), 0);
     objectProperties.add("$defPropName(Object.prototype, '$toStringName', ");
     objectProperties.add(
         'function() { return $toStringHelperName(this); });\n');
 
     // Finally, emit the code in the main buffer.
     targetBuffer.add('(function() {\n$objectProperties$nativeBuffer\n})();\n');
   }
 }