  
 -  registrar_.Remove(this, chrome::NOTIFICATION_PRINT_JOB_EVENT,
 -                    content::Source<PrintJob>(print_job_.get()));
-+  if (!callback_.is_null())
-+    registrar_.Remove(this, chrome::NOTIFICATION_PRINT_JOB_EVENT,
-+                      content::NotificationService::AllSources());
    // Don't close the worker thread.
    print_job_ = nullptr;
  }

   printing_rfh_ = nullptr;
 
+  if (!callback_.is_null()) {
+    std::string cb_str = "";
+    if (!printing_succeeded_)
+      cb_str = printing_cancelled_ ? "cancelled" : "failed";

 }
 
diff --git a/chrome/browser/printing/print_view_manager_base.cc b/chrome/browser/printing/print_view_manager_base.cc
index 2917e93c3f22b3bcbe683c2b944c7af25e66f950..33f48f473efd04e165ec7b9a8738b8d7c18a6adc 100644
--- a/chrome/browser/printing/print_view_manager_base.cc
+++ b/chrome/browser/printing/print_view_manager_base.cc
@@ -27,10 +27,7 @@
