Standardize usage of virtual/override/final in chrome/browser/ui/

chrome/browser/ui/search/search_model_unittest.cc

Index: chrome/browser/ui/search/search_model_unittest.cc
diff --git a/chrome/browser/ui/search/search_model_unittest.cc b/chrome/browser/ui/search/search_model_unittest.cc
index 3476ec3bb73a939459f2d214927f6215d19642b3..2f4a8f65556dd2f784ad96b41b462d71b2dbd647 100644
--- a/chrome/browser/ui/search/search_model_unittest.cc
+++ b/chrome/browser/ui/search/search_model_unittest.cc
@@ -16,10 +16,10 @@ namespace {
 class MockSearchModelObserver : public SearchModelObserver {
  public:
   MockSearchModelObserver();
-  virtual ~MockSearchModelObserver();
+  ~MockSearchModelObserver() override;
 
-  virtual void ModelChanged(const SearchModel::State& old_state,
-                            const SearchModel::State& new_state) override;
+  void ModelChanged(const SearchModel::State& old_state,
+                    const SearchModel::State& new_state) override;
 
   void VerifySearchModelStates(const SearchModel::State& expected_old_state,
                                const SearchModel::State& expected_new_state);