Remove implicit conversions from scoped_refptr to T* in chrome/browser/printing/

chrome/browser/printing/print_preview_message_handler.cc

 // Copyright (c) 2012 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_preview_message_handler.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/memory/ref_counted.h"
@@ skipping 20 matching lines @@
 
 namespace {
 
 void StopWorker(int document_cookie) {
   if (document_cookie <= 0)
     return;
   scoped_refptr<printing::PrintQueriesQueue> queue =
       g_browser_process->print_job_manager()->queue();
   scoped_refptr<printing::PrinterQuery> printer_query =
       queue->PopPrinterQuery(document_cookie);
-  if (printer_query) {
+  if (printer_query.get()) {
     BrowserThread::PostTask(BrowserThread::IO, FROM_HERE,
                             base::Bind(&printing::PrinterQuery::StopWorker,
                                        printer_query));
   }
 }
 
 base::RefCountedBytes* GetDataFromHandle(base::SharedMemoryHandle handle,
                                          uint32 data_size) {
   scoped_ptr<base::SharedMemory> shared_buf(
       new base::SharedMemory(handle, true));
@@ skipping 171 matching lines @@
     IPC_MESSAGE_HANDLER(PrintHostMsg_PrintPreviewInvalidPrinterSettings,
                         OnInvalidPrinterSettings)
     IPC_MESSAGE_HANDLER(PrintHostMsg_SetOptionsFromDocument,
                         OnSetOptionsFromDocument)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
   return handled;
 }
 
 }  // namespace printing