Allow metadata on script tags.

dart/sdk/lib/_internal/compiler/implementation/scanner/parser.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;
 
 /**
  * An event generating parser of Dart programs. This parser expects
  * all tokens in a linked list (aka a token stream).
  *
@@ skipping 20 matching lines @@
   final Listener listener;
   bool mayParseFunctionExpressions = true;
 
   Parser(this.listener);
 
   Token parseUnit(Token token) {
     listener.beginCompilationUnit(token);
     int count = 0;
     while (!identical(token.kind, EOF_TOKEN)) {
       token = parseTopLevelDeclaration(token);
+      listener.endTopLevelDeclaration(token);
       count++;
     }
     listener.endCompilationUnit(count, token);
     return token;
   }
 
   Token parseTopLevelDeclaration(Token token) {
     token = parseMetadataStar(token);
     final String value = token.stringValue;
     if (identical(value, 'interface')) {
@@ skipping 2170 matching lines @@
     }
     listener.handleContinueStatement(hasTarget, continueKeyword, token);
     return expectSemicolon(token);
   }
 
   Token parseEmptyStatement(Token token) {
     listener.handleEmptyStatement(token);
     return expectSemicolon(token);
   }
 }