Convert //printing to use std::unique_ptr

printing/printed_document.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/printed_document.h"
 
 #include <algorithm>
 #include <set>
 #include <string>
 #include <utility>
@@ skipping 92 matching lines @@
   }
 
   if (!g_debug_dump_info.Get().empty())
     DebugDumpSettings(name(), settings, blocking_runner);
 }
 
 PrintedDocument::~PrintedDocument() {
 }
 
 void PrintedDocument::SetPage(int page_number,
-                              scoped_ptr<MetafilePlayer> metafile,
+                              std::unique_ptr<MetafilePlayer> metafile,
 #if defined(OS_WIN)
                               float shrink,
 #endif  // OS_WIN
                               const gfx::Size& paper_size,
                               const gfx::Rect& page_rect) {
   // Notice the page_number + 1, the reason is that this is the value that will
   // be shown. Users dislike 0-based counting.
   scoped_refptr<PrintedPage> page(new PrintedPage(
       page_number + 1, std::move(metafile), paper_size, page_rect));
 #if defined(OS_WIN)
@@ skipping 140 matching lines @@
 }
 
 #if defined(OS_CHROMEOS) || defined(OS_ANDROID)
 // This function is not used on aura linux/chromeos or android.
 void PrintedDocument::RenderPrintedPage(const PrintedPage& page,
                                         PrintingContext* context) const {
 }
 #endif
 
 }  // namespace printing