Standardize usage of virtual/override/final specifiers.

chrome/browser/ui/libgtk2ui/select_file_dialog_impl_gtk2.cc

Index: chrome/browser/ui/libgtk2ui/select_file_dialog_impl_gtk2.cc
diff --git a/chrome/browser/ui/libgtk2ui/select_file_dialog_impl_gtk2.cc b/chrome/browser/ui/libgtk2ui/select_file_dialog_impl_gtk2.cc
index 7f0bf79686036e217f348c77e12af1eb513b59ee..7a9d112961e869096df1e61ade01ec25ae9821ba 100644
--- a/chrome/browser/ui/libgtk2ui/select_file_dialog_impl_gtk2.cc
+++ b/chrome/browser/ui/libgtk2ui/select_file_dialog_impl_gtk2.cc
@@ -53,28 +53,27 @@ class SelectFileDialogImplGTK : public SelectFileDialogImpl,
                                    ui::SelectFilePolicy* policy);
 
  protected:
-  virtual ~SelectFileDialogImplGTK();
+  ~SelectFileDialogImplGTK() override;
 
   // BaseShellDialog implementation:
-  virtual bool IsRunning(gfx::NativeWindow parent_window) const override;
+  bool IsRunning(gfx::NativeWindow parent_window) const override;
 
   // SelectFileDialog implementation.
   // |params| is user data we pass back via the Listener interface.
-  virtual void SelectFileImpl(
-      Type type,
-      const base::string16& title,
-      const base::FilePath& default_path,
-      const FileTypeInfo* file_types,
-      int file_type_index,
-      const base::FilePath::StringType& default_extension,
-      gfx::NativeWindow owning_window,
-      void* params) override;
+  void SelectFileImpl(Type type,
+                      const base::string16& title,
+                      const base::FilePath& default_path,
+                      const FileTypeInfo* file_types,
+                      int file_type_index,
+                      const base::FilePath::StringType& default_extension,
+                      gfx::NativeWindow owning_window,
+                      void* params) override;
 
  private:
-  virtual bool HasMultipleFileTypeChoicesImpl() override;
+  bool HasMultipleFileTypeChoicesImpl() override;
 
   // Overridden from aura::WindowObserver:
-  virtual void OnWindowDestroying(aura::Window* window) override;
+  void OnWindowDestroying(aura::Window* window) override;
 
   // Add the filters from |file_types_| to |chooser|.
   void AddFilters(GtkFileChooser* chooser);