replace OVERRIDE and FINAL with override and final in chrome/browser/ui/[a-s]*

chrome/browser/ui/browser_instant_controller.h

Index: chrome/browser/ui/browser_instant_controller.h
diff --git a/chrome/browser/ui/browser_instant_controller.h b/chrome/browser/ui/browser_instant_controller.h
index 3953c69f4d72882b5f7e9e744698adef41bda88f..1402bfb0d38d290fb997473e8771acd1c1835d05 100644
--- a/chrome/browser/ui/browser_instant_controller.h
+++ b/chrome/browser/ui/browser_instant_controller.h
@@ -50,10 +50,10 @@ class BrowserInstantController : public SearchModelObserver,
  private:
   // SearchModelObserver:
   virtual void ModelChanged(const SearchModel::State& old_state,
-                            const SearchModel::State& new_state) OVERRIDE;
+                            const SearchModel::State& new_state) override;
 
   // InstantServiceObserver:
-  virtual void DefaultSearchProviderChanged() OVERRIDE;
+  virtual void DefaultSearchProviderChanged() override;
 
   // Replaces the contents at tab |index| with |new_contents| and deletes the
   // existing contents.