Use const instead of final for constants.

runtime/bin/mime_multipart_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.
 
 /**
  * Parser for MIME multipart types of data as described in RFC 2046
  * section 5.1.1. The data to parse is supplied through the [:update:]
  * method. As the data is parsed the following callbacks are called:
  *
  *   [:partStart;
  *   [:headerReceived;
  *   [:headersComplete;
  *   [:partDataReceived;
  *   [:partEnd;
  *   [:error:]
  */
 
 class _MimeMultipartParser {
-  final int _START = 0;
-  final int _FIRST_BOUNDARY_ENDING = 111;
-  final int _FIRST_BOUNDARY_END = 112;
-  final int _BOUNDARY_ENDING = 1;
-  final int _BOUNDARY_END = 2;
-  final int _HEADER_START = 3;
-  final int _HEADER_FIELD = 4;
-  final int _HEADER_VALUE_START = 5;
-  final int _HEADER_VALUE = 6;
-  final int _HEADER_VALUE_FOLDING_OR_ENDING = 7;
-  final int _HEADER_VALUE_FOLD_OR_END = 8;
-  final int _HEADER_ENDING = 9;
-  final int _CONTENT = 10;
-  final int _LAST_BOUNDARY_DASH2 = 11;
-  final int _LAST_BOUNDARY_ENDING = 12;
-  final int _LAST_BOUNDARY_END = 13;
-  final int _DONE = 14;
-  final int _FAILURE = 15;
+  const int _START = 0;
+  const int _FIRST_BOUNDARY_ENDING = 111;
+  const int _FIRST_BOUNDARY_END = 112;
+  const int _BOUNDARY_ENDING = 1;
+  const int _BOUNDARY_END = 2;
+  const int _HEADER_START = 3;
+  const int _HEADER_FIELD = 4;
+  const int _HEADER_VALUE_START = 5;
+  const int _HEADER_VALUE = 6;
+  const int _HEADER_VALUE_FOLDING_OR_ENDING = 7;
+  const int _HEADER_VALUE_FOLD_OR_END = 8;
+  const int _HEADER_ENDING = 9;
+  const int _CONTENT = 10;
+  const int _LAST_BOUNDARY_DASH2 = 11;
+  const int _LAST_BOUNDARY_ENDING = 12;
+  const int _LAST_BOUNDARY_END = 13;
+  const int _DONE = 14;
+  const int _FAILURE = 15;
 
   // Construct a new MIME multipart parser with the boundary
   // [boundary]. The boundary should be as specified in the content
   // type parameter, that is without the -- prefix.
   _MimeMultipartParser(String boundary) {
     List<int> charCodes = boundary.charCodes();
     _boundary = new List<int>(4 + charCodes.length);
     // Set-up the matching boundary preceding it with CRLF and two
     // dashes.
     _boundary[0] = _CharCode.CR;
@@ skipping 275 matching lines @@
   Function partDataReceived;
   Function partEnd;
 }
 
 
 class MimeParserException implements Exception {
   const MimeParserException([String this.message = ""]);
   String toString() => "MimeParserException: $message";
   final String message;
 }