Use ASTVisitor as in new AST.

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

Index: compiler/java/com/google/dart/compiler/ast/DartForStatement.java
diff --git a/compiler/java/com/google/dart/compiler/ast/DartForStatement.java b/compiler/java/com/google/dart/compiler/ast/DartForStatement.java
index b5f635f052c96a367e4c53e21135396dfe36ca11..828e1653975f132678ff58923284566c75b95a11 100644
--- a/compiler/java/com/google/dart/compiler/ast/DartForStatement.java
+++ b/compiler/java/com/google/dart/compiler/ast/DartForStatement.java
@@ -39,24 +39,7 @@ public class DartForStatement extends DartStatement {
   }
 
   @Override
-  public void traverse(DartVisitor v, DartContext ctx) {
-    if (v.visit(this, ctx)) {
-      if (init != null) {
-        init = becomeParentOf(v.accept(init));
-      }
-      if (condition != null) {
-        condition = becomeParentOf(v.accept(condition));
-      }
-      if (increment != null) {
-        increment = becomeParentOf(v.accept(increment));
-      }
-      body = becomeParentOf(v.accept(body));
-    }
-    v.endVisit(this, ctx);
-  }
-
-  @Override
-  public void visitChildren(DartPlainVisitor<?> visitor) {
+  public void visitChildren(ASTVisitor<?> visitor) {
     if (init != null) {
       init.accept(visitor);
     }
@@ -70,7 +53,7 @@ public class DartForStatement extends DartStatement {
   }
 
   @Override
-  public <R> R accept(DartPlainVisitor<R> visitor) {
+  public <R> R accept(ASTVisitor<R> visitor) {
     return visitor.visitForStatement(this);
   }
 }