replace OVERRIDE and FINAL with override and final in chrome/browser/[j-q]*

chrome/browser/media_galleries/media_galleries_preferences.h

Index: chrome/browser/media_galleries/media_galleries_preferences.h
diff --git a/chrome/browser/media_galleries/media_galleries_preferences.h b/chrome/browser/media_galleries/media_galleries_preferences.h
index 2e84ee93238529cc2f928e714a7fdf539213cf7c..6ed8da55268f4a0293da9f0389f1896f79f2cdf9 100644
--- a/chrome/browser/media_galleries/media_galleries_preferences.h
+++ b/chrome/browser/media_galleries/media_galleries_preferences.h
@@ -201,7 +201,7 @@ class MediaGalleriesPreferences
 
   // RemovableStorageObserver implementation.
   virtual void OnRemovableStorageAttached(
-      const storage_monitor::StorageInfo& info) OVERRIDE;
+      const storage_monitor::StorageInfo& info) override;
 
   // Lookup a media gallery and fill in information about it and return true if
   // it exists. Return false if it does not, filling in default information.
@@ -277,7 +277,7 @@ class MediaGalleriesPreferences
   void SetLastScanCompletionTime(const base::Time& time);
 
   // KeyedService implementation:
-  virtual void Shutdown() OVERRIDE;
+  virtual void Shutdown() override;
 
   static void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry);