Add @JSName annotation for native fields and methods.

sdk/lib/_internal/compiler/implementation/scanner/listener.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.
 
 part of scanner;
 
 const bool VERBOSE = false;
 
 /**
  * A parser event listener that does nothing except throw exceptions
@@ skipping 729 matching lines @@
     if (periodBeforeName != null) {
       popNode(); // Discard name.
     }
     popNode(); // Discard node (Send or Identifier).
     pushMetadata(new PartialMetadataAnnotation(beginToken));
   }
 
   void endClassDeclaration(int interfacesCount, Token beginToken,
                            Token extendsKeyword, Token implementsKeyword,
                            Token endToken) {
-    SourceString nativeName = native.checkForNativeClass(this);
+    SourceString nativeTagInfo = native.checkForNativeClass(this);
     NodeList interfaces =
         makeNodeList(interfacesCount, implementsKeyword, null, ",");
     TypeAnnotation supertype = popNode();
     NodeList typeParameters = popNode();
     Identifier name = popNode();
     int id = idGenerator();
     ClassElement element = new PartialClassElement(
         name.source, beginToken, endToken, compilationUnitElement, id);
-    element.nativeName = nativeName;
+    element.nativeTagInfo = nativeTagInfo;
     pushElement(element);
     rejectBuiltInIdentifier(name);
   }
 
   void rejectBuiltInIdentifier(Identifier name) {
     if (name.source is Keyword) {
       Keyword keyword = name.source;
       if (!keyword.isPseudo) {
         recoverableError('illegal name ${keyword.syntax}', node: name);
       }
@@ skipping 1179 matching lines @@
 
 Node parse(DiagnosticListener diagnosticListener,
            CompilationUnitElement element,
            doParse(Parser parser)) {
   NodeListener listener = new NodeListener(diagnosticListener, element);
   doParse(new Parser(listener));
   Node node = listener.popNode();
   assert(listener.nodes.isEmpty);
   return node;
 }