replace OVERRIDE and FINAL with override and final in sync/

sync/js/sync_js_controller.h

Index: sync/js/sync_js_controller.h
diff --git a/sync/js/sync_js_controller.h b/sync/js/sync_js_controller.h
index f0bb423b8c2f85c3e9e9f2092125c1ce58ad8e02..85c4236bec3b8e96ca1b7f5d3cbca4d0ba29597a 100644
--- a/sync/js/sync_js_controller.h
+++ b/sync/js/sync_js_controller.h
@@ -36,12 +36,12 @@ class SYNC_EXPORT SyncJsController
   void AttachJsBackend(const WeakHandle<JsBackend>& js_backend);
 
   // JsController implementation.
-  virtual void AddJsEventHandler(JsEventHandler* event_handler) OVERRIDE;
-  virtual void RemoveJsEventHandler(JsEventHandler* event_handler) OVERRIDE;
+  virtual void AddJsEventHandler(JsEventHandler* event_handler) override;
+  virtual void RemoveJsEventHandler(JsEventHandler* event_handler) override;
 
   // JsEventHandler implementation.
   virtual void HandleJsEvent(const std::string& name,
-                             const JsEventDetails& details) OVERRIDE;
+                             const JsEventDetails& details) override;
 
  private:
   // Sets |js_backend_|'s event handler depending on how many