Use ASTVisitor as in new AST.

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

Index: compiler/java/com/google/dart/compiler/ast/DartPropertyAccess.java
diff --git a/compiler/java/com/google/dart/compiler/ast/DartPropertyAccess.java b/compiler/java/com/google/dart/compiler/ast/DartPropertyAccess.java
index fddc51ca456036332ba5831f6cfa4095b25819fa..5662c065e0b08d56e9ca120ea742c0f0ad50477f 100644
--- a/compiler/java/com/google/dart/compiler/ast/DartPropertyAccess.java
+++ b/compiler/java/com/google/dart/compiler/ast/DartPropertyAccess.java
@@ -7,7 +7,6 @@ package com.google.dart.compiler.ast;
 import com.google.dart.compiler.common.Symbol;
 import com.google.dart.compiler.resolver.Element;
 import com.google.dart.compiler.type.Type;
-import com.google.dart.compiler.type.Types;
 
 /**
  * Represents a Dart property access expression (a.b).
@@ -76,22 +75,13 @@ public class DartPropertyAccess extends DartExpression implements ElementReferen
   }
 
   @Override
-  public void traverse(DartVisitor v, DartContext ctx) {
-    if (v.visit(this, ctx)) {
-      qualifier = becomeParentOf(v.accept(qualifier));
-      name = becomeParentOf(v.accept(name));
-    }
-    v.endVisit(this, ctx);
-  }
-
-  @Override
-  public void visitChildren(DartPlainVisitor<?> visitor) {
+  public void visitChildren(ASTVisitor<?> visitor) {
     qualifier.accept(visitor);
     name.accept(visitor);
   }
 
   @Override
-  public <R> R accept(DartPlainVisitor<R> visitor) {
+  public <R> R accept(ASTVisitor<R> visitor) {
     return visitor.visitPropertyAccess(this);
   }