Split inference type-info accessors into members, parameters and local functions

tests/compiler/dart2js/map_tracer_const_test.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.
 
 import 'package:expect/expect.dart';
 import "package:async_helper/async_helper.dart";
 
 import 'compiler_helper.dart';
 import 'type_mask_test_helper.dart';
 
@@ skipping 19 matching lines @@
 
 void main() {
   Uri uri = new Uri(scheme: 'source');
   var compiler = compilerFor(TEST, uri, expectedErrors: 0, expectedWarnings: 0);
   compiler.stopAfterTypeInference = true;
   asyncTest(() => compiler.run(uri).then((_) {
         var typesInferrer = compiler.globalInference.typesInferrerInternal;
         var closedWorld = typesInferrer.closedWorld;
         var commonMasks = closedWorld.commonMasks;
         var element = findElement(compiler, 'closure');
-        var mask = typesInferrer.getReturnTypeOfElement(element);
+        var mask = typesInferrer.getReturnTypeOfMember(element);
         Expect.equals(commonMasks.numType, simplify(mask, closedWorld));
       }));
 }