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

chrome/browser/background/background_mode_manager.cc

Index: chrome/browser/background/background_mode_manager.cc
diff --git a/chrome/browser/background/background_mode_manager.cc b/chrome/browser/background/background_mode_manager.cc
index 81af5902b4d8d287d043666f045b04bb658b0342..09d4afb8bca9b57995abc872a23d3001d4ab4e92 100644
--- a/chrome/browser/background/background_mode_manager.cc
+++ b/chrome/browser/background/background_mode_manager.cc
@@ -5,9 +5,9 @@
 #include "chrome/browser/background/background_mode_manager.h"
 
 #include <stddef.h>
-
 #include <algorithm>
 #include <string>
+#include <utility>
 #include <vector>
 
 #include "base/base_paths.h"
@@ -988,7 +988,7 @@ void BackgroundModeManager::UpdateStatusTrayIconContextMenu() {
   menu->AddItemWithStringId(IDC_EXIT, IDS_EXIT);
 
   context_menu_ = menu.get();
-  status_icon_->SetContextMenu(menu.Pass());
+  status_icon_->SetContextMenu(std::move(menu));
 }
 
 void BackgroundModeManager::RemoveStatusTrayIcon() {