diff --git chrome/browser/ui/prefs/pref_watcher.h chrome/browser/ui/prefs/pref_watcher.h
index 79ce1590df640..6b57feb48aad6 100644
--- chrome/browser/ui/prefs/pref_watcher.h
+++ chrome/browser/ui/prefs/pref_watcher.h
@@ -36,10 +36,10 @@ class PrefWatcher : public KeyedService,
   void RegisterRendererPreferenceWatcher(
       mojo::PendingRemote<blink::mojom::RendererPreferenceWatcher> watcher);
 
- private:
   // KeyedService overrides:
   void Shutdown() override;
 
+ private:
   // ui::NativeThemeObserver:
   void OnNativeThemeUpdated(ui::NativeTheme* observed_theme) override;