Use ASTVisitor as in new AST.

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

Index: compiler/java/com/google/dart/compiler/ast/DartFunctionObjectInvocation.java
diff --git a/compiler/java/com/google/dart/compiler/ast/DartFunctionObjectInvocation.java b/compiler/java/com/google/dart/compiler/ast/DartFunctionObjectInvocation.java
index 400f349259ee0a2eca24ded47f3d9c5be45ce78e..29e50d8fdc7dfdd85735569afb1705ff5658616a 100644
--- a/compiler/java/com/google/dart/compiler/ast/DartFunctionObjectInvocation.java
+++ b/compiler/java/com/google/dart/compiler/ast/DartFunctionObjectInvocation.java
@@ -25,22 +25,13 @@ public class DartFunctionObjectInvocation extends DartInvocation {
   }
 
   @Override
-  public void traverse(DartVisitor v, DartContext ctx) {
-    if (v.visit(this, ctx)) {
-      target = becomeParentOf(v.accept(target));
-      v.acceptWithInsertRemove(this, getArgs());
-    }
-    v.endVisit(this, ctx);
-  }
-
-  @Override
-  public void visitChildren(DartPlainVisitor<?> visitor) {
+  public void visitChildren(ASTVisitor<?> visitor) {
     target.accept(visitor);
     visitor.visit(getArgs());
   }
 
   @Override
-  public <R> R accept(DartPlainVisitor<R> visitor) {
+  public <R> R accept(ASTVisitor<R> visitor) {
     return visitor.visitFunctionObjectInvocation(this);
   }
 }