Change new List(n) to return fixed length list.

sdk/lib/_internal/compiler/implementation/js/nodes.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 js;
 
 abstract class NodeVisitor<T> {
   T visitProgram(Program node);
 
   T visitBlock(Block node);
@@ skipping 1063 matching lines @@
 
 LiteralString string(String value) => js.string(value);
 
 class MiniJsParserError {
   MiniJsParserError(this.parser, this.message) { }
 
   MiniJsParser parser;
   String message;
 
   String toString() {
-    var codes =
-        new List.fixedLength(parser.lastPosition, fill: charCodes.$SPACE);
+    var codes = new List.filled(parser.lastPosition, charCodes.$SPACE);
     var spaces = new String.fromCharCodes(codes);
     return "Error in MiniJsParser:\n${parser.src}\n$spaces^\n$spaces$message\n";
   }
 }
 
 /// Mini JavaScript parser for tiny snippets of code that we want to make into
 /// AST nodes.  Handles:
 /// * identifiers.
 /// * dot access.
 /// * method calls.
@@ skipping 388 matching lines @@
 
   Expression expression() {
     Expression expression = parseVarDeclarationOrExpression();
     if (lastCategory != NONE || position != src.length) {
       throw new MiniJsParserError(
           this, "Unparsed junk: ${categoryToString(lastCategory)}");
     }
     return expression;
   }
 }