Assert that thread-safe reference counting is used with...

chrome/browser/printing/print_job_worker.cc

 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/printing/print_job_worker.h"
 
 #include "base/message_loop.h"
 #include "chrome/browser/printing/print_job.h"
 #include "chrome/common/notification_service.h"
 #include "printing/printed_document.h"
@@ skipping 257 matching lines @@
   owner_->message_loop()->PostTask(FROM_HERE, task);
   Cancel();
 
   // Makes sure the variables are reinitialized.
   document_ = NULL;
   page_number_ = PageNumber::npos();
 }
 
 }  // namespace printing
 
-RunnableMethodTraits<printing::PrintJobWorker>::RunnableMethodTraits() {
-}
-
 void RunnableMethodTraits<printing::PrintJobWorker>::RetainCallee(
     printing::PrintJobWorker* obj) {
   DCHECK(!owner_.get());
   owner_ = obj->owner_;
 }
 
 void RunnableMethodTraits<printing::PrintJobWorker>::ReleaseCallee(
     printing::PrintJobWorker* obj) {
   DCHECK_EQ(owner_, obj->owner_);
   owner_ = NULL;
 }