Support parameter access in analyzer2dart.

sdk/lib/_internal/compiler/implementation/deferred_load.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 deferred_load;
 
 import 'dart2jslib.dart' show
     Backend,
     Compiler,
     CompilerTask,
@@ skipping 287 matching lines @@
       if (astElement is! TypedefElement &&
           !compiler.enqueuer.resolution.hasBeenResolved(astElement)) {
         return;
       }
 
       TreeElements treeElements = astElement.resolvedAst.elements;
 
       assert(treeElements != null);
 
       for (Element dependency in treeElements.allElements) {
-        if (Elements.isLocal(dependency) && !dependency.isFunction) continue;
+        if (dependency.isLocal && !dependency.isFunction) continue;
         if (dependency.isErroneous) continue;
         if (dependency.isTypeVariable) continue;
 
         elements.add(dependency);
       }
       treeElements.forEachConstantNode((Node node, _) {
         // Explicitly depend on the backend constants.
         addConstants(
             backend.constants.getConstantForNode(node, treeElements));
       });
@@ skipping 438 matching lines @@
     Element maybePrefix = elements[identifier];
     if (maybePrefix != null && maybePrefix.isPrefix) {
       PrefixElement prefixElement = maybePrefix;
       if (prefixElement.isDeferred) {
         return prefixElement;
       }
     }
     return null;
   }
 }