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

chrome/browser/extensions/api/idle/idle_manager.h

Index: chrome/browser/extensions/api/idle/idle_manager.h
diff --git a/chrome/browser/extensions/api/idle/idle_manager.h b/chrome/browser/extensions/api/idle/idle_manager.h
index 29a9bd1dd2ffbb1f3e7655ae240e4a1bbcffe0c1..8e96e27cbcbf7da56426c52696c4aacbf81fa685 100644
--- a/chrome/browser/extensions/api/idle/idle_manager.h
+++ b/chrome/browser/extensions/api/idle/idle_manager.h
@@ -74,17 +74,17 @@ class IdleManager : public ExtensionRegistryObserver,
   void Init();
 
   // KeyedService implementation.
-  virtual void Shutdown() OVERRIDE;
+  virtual void Shutdown() override;
 
   // ExtensionRegistryObserver implementation.
   virtual void OnExtensionUnloaded(
       content::BrowserContext* browser_context,
       const Extension* extension,
-      UnloadedExtensionInfo::Reason reason) OVERRIDE;
+      UnloadedExtensionInfo::Reason reason) override;
 
   // EventRouter::Observer implementation.
-  virtual void OnListenerAdded(const EventListenerInfo& details) OVERRIDE;
-  virtual void OnListenerRemoved(const EventListenerInfo& details) OVERRIDE;
+  virtual void OnListenerAdded(const EventListenerInfo& details) override;
+  virtual void OnListenerRemoved(const EventListenerInfo& details) override;
 
   void QueryState(int threshold, QueryStateCallback notify);
   void SetThreshold(const std::string& extension_id, int threshold);