Convert //printing to use std::unique_ptr

printing/printing_context_no_system_dialog.cc

 // Copyright (c) 2011 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 "printing/printing_context_no_system_dialog.h"
 
 #include <stdint.h>
 #include <unicode/ulocdata.h>
 
 #include "base/logging.h"
+#include "base/memory/ptr_util.h"
 #include "base/values.h"
 #include "printing/metafile.h"
 #include "printing/print_job_constants.h"
 #include "printing/units.h"
 
 namespace printing {
 
 // static
-scoped_ptr<PrintingContext> PrintingContext::Create(Delegate* delegate) {
-  return make_scoped_ptr<PrintingContext>(
-      new PrintingContextNoSystemDialog(delegate));
+std::unique_ptr<PrintingContext> PrintingContext::Create(Delegate* delegate) {
+  return base::WrapUnique(new PrintingContextNoSystemDialog(delegate));
 }
 
 PrintingContextNoSystemDialog::PrintingContextNoSystemDialog(Delegate* delegate)
     : PrintingContext(delegate) {
 }
 
 PrintingContextNoSystemDialog::~PrintingContextNoSystemDialog() {
   ReleaseContext();
 }
 
@@ skipping 111 matching lines @@
   // Intentional No-op.
 }
 
 gfx::NativeDrawingContext PrintingContextNoSystemDialog::context() const {
   // Intentional No-op.
   return NULL;
 }
 
 }  // namespace printing