Update {virtual,override} to follow C++11 style in chrome.

chrome/browser/ui/views/color_chooser_dialog.h

Index: chrome/browser/ui/views/color_chooser_dialog.h
diff --git a/chrome/browser/ui/views/color_chooser_dialog.h b/chrome/browser/ui/views/color_chooser_dialog.h
index b23061a386dc0dc235f5924fc559aa3b7d355a56..0afc50f9f9c5130c5f9c794ba0a247c0a76f4cda 100644
--- a/chrome/browser/ui/views/color_chooser_dialog.h
+++ b/chrome/browser/ui/views/color_chooser_dialog.h
@@ -23,11 +23,11 @@ class ColorChooserDialog
   ColorChooserDialog(views::ColorChooserListener* listener,
                      SkColor initial_color,
                      gfx::NativeWindow owning_window);
-  virtual ~ColorChooserDialog();
+  ~ColorChooserDialog() override;
 
   // BaseShellDialog:
-  virtual bool IsRunning(gfx::NativeWindow owning_window) const override;
-  virtual void ListenerDestroyed() override;
+  bool IsRunning(gfx::NativeWindow owning_window) const override;
+  void ListenerDestroyed() override;
 
  private:
   struct ExecuteOpenParams {