Issue 3268. Support for replacing 'assert' statement with 'assert' function

compiler/java/com/google/dart/compiler/ast/DartReturnBlock.java

Index: compiler/java/com/google/dart/compiler/ast/DartReturnBlock.java
diff --git a/compiler/java/com/google/dart/compiler/ast/DartReturnBlock.java b/compiler/java/com/google/dart/compiler/ast/DartReturnBlock.java
index 203dbd797929351eada59f79e35442c75be05cff..a47bb20e0b5d1f3ba30e42e7438fb2bf0e86ccc4 100644
--- a/compiler/java/com/google/dart/compiler/ast/DartReturnBlock.java
+++ b/compiler/java/com/google/dart/compiler/ast/DartReturnBlock.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
+// 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.
 package com.google.dart.compiler.ast;
@@ -10,8 +10,13 @@ import com.google.common.collect.Lists;
  */
 public class DartReturnBlock extends DartBlock {
   public DartReturnBlock(DartExpression returnVal) {
-    super(Lists.<DartStatement>newArrayList(new DartReturnStatement(returnVal)));
+    super(Lists.<DartStatement> newArrayList(new DartReturnStatement(returnVal)));
     // Set the source information for the synthesized node.
     getStatements().get(0).setSourceInfo(returnVal.getSourceInfo());
   }
+
+  @Override
+  public <R> R accept(ASTVisitor<R> visitor) {
+    return visitor.visitReturnBlock(this);
+  }
 }