Remove more warnings.

lib/compiler/implementation/tree/prettyprint.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.
 
 /**
  * Pretty-prints Node tree in XML-like format.
  *
  * TODO(smok): Add main() to run from command-line to print out tree for given
  * .dart file.
  */
@@ skipping 230 matching lines @@
     visitLiteral(node, "LiteralInt");
   }
 
   /** Returns token string value or [null] if token is [null]. */
   tokenToStringOrNull(Token token) => token === null ? null : token.stringValue;
 
   visitLiteralList(LiteralList node) {
     openNode(node, "LiteralList", {
       "constKeyword" : tokenToStringOrNull(node.constKeyword)
     });
-    visitWithPrefix(node.type, "type:");
+    visitWithPrefix(node.typeArguments, "typeArguments:");
     visitWithPrefix(node.elements, "elements:");
     closeNode();
   }
 
   visitLiteralMap(LiteralMap node) {
     visitNodeWithChildren(node, "LiteralMap");
   }
 
   visitLiteralMapEntry(LiteralMapEntry node) {
     visitNodeWithChildren(node, "LiteralMapEntry");
@@ skipping 132 matching lines @@
     visitWithPrefix(node.type, "type:");
     visitWithPrefix(node.modifiers, "modifiers:");
     visitWithPrefix(node.definitions, "definitions:");
     closeNode();
   }
 
   visitWhile(While node) {
     visitNodeWithChildren(node, "While");
   }
 }