Use std::default_delete as the default deleter for scoped_ptr.

chrome/browser/chromeos/app_mode/kiosk_app_manager.h

Index: chrome/browser/chromeos/app_mode/kiosk_app_manager.h
diff --git a/chrome/browser/chromeos/app_mode/kiosk_app_manager.h b/chrome/browser/chromeos/app_mode/kiosk_app_manager.h
index 13d8da344cff1bd0fba46dc439d734172a5ab28e..c2b46b0d643dbedb6022737802c1ade51063d812 100644
--- a/chrome/browser/chromeos/app_mode/kiosk_app_manager.h
+++ b/chrome/browser/chromeos/app_mode/kiosk_app_manager.h
@@ -5,6 +5,7 @@
 #ifndef CHROME_BROWSER_CHROMEOS_APP_MODE_KIOSK_APP_MANAGER_H_
 #define CHROME_BROWSER_CHROMEOS_APP_MODE_KIOSK_APP_MANAGER_H_
 
+#include <memory>
 #include <string>
 #include <vector>
 
@@ -228,7 +229,7 @@ class KioskAppManager : public KioskAppDataDelegate,
 
  private:
   friend struct base::DefaultLazyInstanceTraits<KioskAppManager>;
-  friend struct base::DefaultDeleter<KioskAppManager>;
+  friend std::default_delete<KioskAppManager>;
   friend class KioskAppManagerTest;
   friend class KioskTest;
   friend class KioskUpdateTest;