1 files changed, 5 insertions, 2 deletions
diff --git a/chrome/browser/printing/print_job_worker_owner.h b/chrome/browser/printing/print_job_worker_owner.h
index e1ba719..510f15f 100644
--- a/chrome/browser/printing/print_job_worker_owner.h
+++ b/chrome/browser/printing/print_job_worker_owner.h
@@ -18,8 +18,6 @@ class PrintSettings;
 class PrintJobWorkerOwner :
     public base::RefCountedThreadSafe<PrintJobWorkerOwner> {
  public:
-  virtual ~PrintJobWorkerOwner() {
-  }
 
   // Finishes the initialization began by PrintJobWorker::Init(). Creates a
   // new PrintedDocument if necessary. Solely meant to be called by
@@ -38,6 +36,11 @@ class PrintJobWorkerOwner :
 
   // Cookie uniquely identifying the PrintedDocument and/or loaded settings.
   virtual int cookie() const = 0;
+
+ protected:
+  friend class base::RefCountedThreadSafe<PrintJobWorkerOwner>;
+
+  virtual ~PrintJobWorkerOwner() {}
 };
 
 }  // namespace printing