replace OVERRIDE and FINAL with override and final in chrome/browser/extensions/

chrome/browser/extensions/updater/extension_cache_impl.h

Index: chrome/browser/extensions/updater/extension_cache_impl.h
diff --git a/chrome/browser/extensions/updater/extension_cache_impl.h b/chrome/browser/extensions/updater/extension_cache_impl.h
index a1223eead24fef4dcc7b6b1c008a7665a49ad82e..444d455ec3c20a8a206cbce064cbbc2022dc69fa 100644
--- a/chrome/browser/extensions/updater/extension_cache_impl.h
+++ b/chrome/browser/extensions/updater/extension_cache_impl.h
@@ -31,21 +31,21 @@ class ExtensionCacheImpl : public ExtensionCache,
   static ExtensionCacheImpl* GetInstance();
 
   // Implementation of ExtensionCache.
-  virtual void Start(const base::Closure& callback) OVERRIDE;
-  virtual void Shutdown(const base::Closure& callback) OVERRIDE;
-  virtual void AllowCaching(const std::string& id) OVERRIDE;
+  virtual void Start(const base::Closure& callback) override;
+  virtual void Shutdown(const base::Closure& callback) override;
+  virtual void AllowCaching(const std::string& id) override;
   virtual bool GetExtension(const std::string& id,
                             base::FilePath* file_path,
-                            std::string* version) OVERRIDE;
+                            std::string* version) override;
   virtual void PutExtension(const std::string& id,
                             const base::FilePath& file_path,
                             const std::string& version,
-                            const PutExtensionCallback& callback) OVERRIDE;
+                            const PutExtensionCallback& callback) override;
 
   // Implementation of content::NotificationObserver:
   virtual void Observe(int type,
                        const content::NotificationSource& source,
-                       const content::NotificationDetails& details) OVERRIDE;
+                       const content::NotificationDetails& details) override;
 
  private:
   friend struct DefaultSingletonTraits<ExtensionCacheImpl>;