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

chrome/browser/extensions/api/spellcheck/spellcheck_api.h

Index: chrome/browser/extensions/api/spellcheck/spellcheck_api.h
diff --git a/chrome/browser/extensions/api/spellcheck/spellcheck_api.h b/chrome/browser/extensions/api/spellcheck/spellcheck_api.h
index 2405813f928006487cca69619f5247c6d730d1af..382f074a1247be9834519dfa0deaa8c55d908e23 100644
--- a/chrome/browser/extensions/api/spellcheck/spellcheck_api.h
+++ b/chrome/browser/extensions/api/spellcheck/spellcheck_api.h
@@ -26,11 +26,11 @@ class SpellcheckAPI : public BrowserContextKeyedAPI,
 
   // ExtensionRegistryObserver implementation.
   virtual void OnExtensionLoaded(content::BrowserContext* browser_context,
-                                 const Extension* extension) OVERRIDE;
+                                 const Extension* extension) override;
   virtual void OnExtensionUnloaded(
       content::BrowserContext* browser_context,
       const Extension* extension,
-      UnloadedExtensionInfo::Reason reason) OVERRIDE;
+      UnloadedExtensionInfo::Reason reason) override;
 
   // BrowserContextKeyedAPI implementation.
   static const char* service_name() {