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

chrome/browser/extensions/plugin_manager.h

Index: chrome/browser/extensions/plugin_manager.h
diff --git a/chrome/browser/extensions/plugin_manager.h b/chrome/browser/extensions/plugin_manager.h
index c61dd950ca1beb8af483cf33a614be10708d151b..0d010dde6e6d15fc4c22655216cf0b9610c5fd8c 100644
--- a/chrome/browser/extensions/plugin_manager.h
+++ b/chrome/browser/extensions/plugin_manager.h
@@ -56,11 +56,11 @@ class PluginManager : 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() { return "PluginManager"; }