Convert Pass()→std::move() in //chrome

chrome/browser/background/background_mode_manager.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/background/background_mode_manager.h"
 
 #include <stddef.h>
-
 #include <algorithm>
 #include <string>
+#include <utility>
 #include <vector>
 
 #include "base/base_paths.h"
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/command_line.h"
 #include "base/location.h"
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
 #include "base/prefs/pref_registry_simple.h"
@@ skipping 960 matching lines @@
   PrefService* service = g_browser_process->local_state();
   DCHECK(service);
   bool enabled =
       service->IsUserModifiablePreference(prefs::kBackgroundModeEnabled);
   menu->SetCommandIdEnabled(IDC_STATUS_TRAY_KEEP_CHROME_RUNNING_IN_BACKGROUND,
                             enabled);
 
   menu->AddItemWithStringId(IDC_EXIT, IDS_EXIT);
 
   context_menu_ = menu.get();
-  status_icon_->SetContextMenu(menu.Pass());
+  status_icon_->SetContextMenu(std::move(menu));
 }
 
 void BackgroundModeManager::RemoveStatusTrayIcon() {
   if (status_icon_)
     status_tray_->RemoveStatusIcon(status_icon_);
   status_icon_ = NULL;
   context_menu_ = NULL;
 }
 
 BackgroundModeManager::BackgroundModeData*
@@ skipping 20 matching lines @@
     }
   }
   return profile_it;
 }
 
 bool BackgroundModeManager::IsBackgroundModePrefEnabled() const {
   PrefService* service = g_browser_process->local_state();
   DCHECK(service);
   return service->GetBoolean(prefs::kBackgroundModeEnabled);
 }