- Change "static final" to "static const" in the lib/ directory.

lib/compiler/implementation/ssa/js_names.dart

 // Copyright (c) 2011, 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.
 
 class JsNames {
-  static final javaScriptKeywords = const <String>[
+  static const javaScriptKeywords = const <String>[
     // These are current keywords
     "break", "delete", "function", "return", "typeof", "case", "do", "if",
     "switch", "var", "catch", "else", "in", "this", "void", "continue",
     "false", "instanceof", "throw", "while", "debugger", "finally", "new",
     "true", "with", "default", "for", "null", "try",
 
     // These are future keywords
     "abstract", "double", "goto", "native", "static", "boolean", "enum",
     "implements", "package", "super", "byte", "export", "import", "private",
     "synchronized", "char", "extends", "int", "protected", "throws",
     "class", "final", "interface", "public", "transient", "const", "float",
     "long", "short", "volatile"
   ];
 
-  static final reservedGlobalSymbols = const <String>[
+  static const reservedGlobalSymbols = const <String>[
     // Section references are from Ecma-262
     // (http://www.ecma-international.org/publications/files/ECMA-ST/Ecma-262.pdf)
 
     // 15.1.1 Value Properties of the Global Object
     "NaN", "Infinity", "undefined",
 
     // 15.1.2 Function Properties of the Global Object
     "eval", "parseInt", "parseFloat", "isNan", "isFinite",
 
     // 15.1.3 URI Handling Function Properties
@@ skipping 111 matching lines @@
     "\$wnd", "\$doc", "\$entry", "\$moduleName", "\$moduleBase",
     "\$gwt_version", "\$sessionId",
 
     // Identifiers used by JsStackEmulator; later set to obfuscatable
     "\$stack", "\$stackDepth", "\$location",
 
     // TODO: prove why this is necessary or remove it
     "call"
   ];
 
-  static final reservedPropertySymbols =
+  static const reservedPropertySymbols =
       const <String>["__PROTO__", "prototype", "constructor"];
 
   static Set<String> _reserved;
 
   static Set<String> get reserved {
     if (_reserved === null) {
       _reserved = new Set<String>();
       _reserved.addAll(reservedPropertySymbols);
       _reserved.addAll(reservedGlobalSymbols);
       _reserved.addAll(javaScriptKeywords);
@@ skipping 10 matching lines @@
   static String getValid(String name) {
     if (reserved.contains(name)) {
       name = '$name\$';
       assert(!reserved.contains(name));
     } else if (name.contains(@'$')) {
       name = name.replaceAll(@'$', @'$$');
     }
     return name;
   }
 }