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

lib/compiler/implementation/compile_time_constants.dart

Index: lib/compiler/implementation/compile_time_constants.dart
===================================================================
--- lib/compiler/implementation/compile_time_constants.dart	(revision 11400)
+++ lib/compiler/implementation/compile_time_constants.dart	(working copy)
@@ -88,7 +88,7 @@
 
 class NullConstant extends PrimitiveConstant {
   /** The value a Dart null is compiled to in JavaScript. */
-  static final String JsNull = "null";
+  static const String JsNull = "null";
 
   factory NullConstant() => const NullConstant._internal();
   const NullConstant._internal();
@@ -353,16 +353,16 @@
    * The [PROTO_PROPERTY] must not be used as normal property in any JavaScript
    * object. It would change the prototype chain.
    */
-  static final String PROTO_PROPERTY = "__proto__";
+  static const String PROTO_PROPERTY = "__proto__";
 
   /** The dart class implementing constant map literals. */
-  static final SourceString DART_CLASS = const SourceString("ConstantMap");
-  static final SourceString DART_PROTO_CLASS =
+  static const SourceString DART_CLASS = const SourceString("ConstantMap");
+  static const SourceString DART_PROTO_CLASS =
       const SourceString("ConstantProtoMap");
-  static final SourceString LENGTH_NAME = const SourceString("length");
-  static final SourceString JS_OBJECT_NAME = const SourceString("_jsObject");
-  static final SourceString KEYS_NAME = const SourceString("_keys");
-  static final SourceString PROTO_VALUE = const SourceString("_protoValue");
+  static const SourceString LENGTH_NAME = const SourceString("length");
+  static const SourceString JS_OBJECT_NAME = const SourceString("_jsObject");
+  static const SourceString KEYS_NAME = const SourceString("_keys");
+  static const SourceString PROTO_VALUE = const SourceString("_protoValue");
 
   final ListConstant keys;
   final List<Constant> values;
@@ -632,7 +632,7 @@
   }
 
   /**
-   * Returns a [List] of static final fields that need to be initialized. The
+   * Returns a [List] of static const fields that need to be initialized. The
    * list must be evaluated in order since the fields might depend on each
    * other.
    */