Convert //chrome/browser/chromeos from scoped_ptr to std::unique_ptr

chrome/browser/chromeos/login/users/wallpaper/wallpaper_manager_test_utils.cc

 // Copyright 2014 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/chromeos/login/users/wallpaper/wallpaper_manager_test_utils.h"
 
 #include <stddef.h>
 
 #include "ash/ash_switches.h"
 #include "base/command_line.h"
@@ skipping 148 matching lines @@
 
   return true;
 }
 
 void WaitAsyncWallpaperLoadFinished() {
   TestWallpaperObserverPendingListEmpty observer(WallpaperManager::Get());
   observer.WaitForPendingListEmpty();
 }
 
 void CreateCmdlineWallpapers(const base::ScopedTempDir& dir,
-                             scoped_ptr<base::CommandLine>* command_line) {
+                             std::unique_ptr<base::CommandLine>* command_line) {
   std::vector<std::string> options;
   options.push_back(std::string("WM_Test_cmdline"));
   const base::FilePath small_file =
       dir.path().Append(FILE_PATH_LITERAL("small.jpg"));
   options.push_back(std::string("--") +
                     chromeos::switches::kDefaultWallpaperSmall + "=" +
                     small_file.value());
   const base::FilePath large_file =
       dir.path().Append(FILE_PATH_LITERAL("large.jpg"));
   options.push_back(std::string("--") +
@@ skipping 45 matching lines @@
                             kWallpaperSize,
                             kLargeChildWallpaperColor));
 
   command_line->reset(new base::CommandLine(options));
   WallpaperManager::Get()->SetCommandLineForTesting(command_line->get());
 }
 
 }  // namespace wallpaper_manager_test_utils
 
 }  // namespace chromeos