Use ASTVisitor as in new AST.

editor/tools/plugins/com.google.dart.tools.core/src/com/google/dart/tools/core/dom/visitor/WrappedDartVisitor.java

Index: editor/tools/plugins/com.google.dart.tools.core/src/com/google/dart/tools/core/dom/visitor/WrappedDartVisitor.java
diff --git a/editor/tools/plugins/com.google.dart.tools.core/src/com/google/dart/tools/core/dom/visitor/WrappedDartVisitor.java b/editor/tools/plugins/com.google.dart.tools.core/src/com/google/dart/tools/core/dom/visitor/WrappedDartVisitor.java
index 17d1a427d0c024a8defa7a1f85a21c40d107f361..10676f06d2e39eb8b37728e005bbee667bb965d1 100644
--- a/editor/tools/plugins/com.google.dart.tools.core/src/com/google/dart/tools/core/dom/visitor/WrappedDartVisitor.java
+++ b/editor/tools/plugins/com.google.dart.tools.core/src/com/google/dart/tools/core/dom/visitor/WrappedDartVisitor.java
@@ -14,24 +14,26 @@
 package com.google.dart.tools.core.dom.visitor;
 
 import com.google.dart.compiler.ast.DartNode;
-import com.google.dart.compiler.ast.DartPlainVisitor;
+import com.google.dart.compiler.ast.ASTVisitor;
 
 /**
  * The interface <code>WrappedDartVisitor</code> defines the behavior of a visitor that implements

[Brian Wilkerson, 2012/03/05 16:57:35]

nit: "interface" -> "class"

[scheglov, 2012/03/05 17:22:51]

Done.

  * {@link #preVisit(DartNode)} and {@link #postVisit(DartNode)} behavior.
  */
-public interface WrappedDartVisitor<R> extends DartPlainVisitor<R> {
+public class WrappedDartVisitor<R> extends ASTVisitor<R> {
   /**
    * The given node has just been visited.
    * 
    * @param node the node that was just visited
    */
-  public void postVisit(DartNode node);
+  public void postVisit(DartNode node) {
+  }
 
   /**
    * The given node is about to be visited.
    * 
    * @param node the node that is about to be visited
    */
-  public void preVisit(DartNode node);
+  public void preVisit(DartNode node) {
+  }
 }