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

chrome/browser/ui/webui/constrained_web_dialog_ui_browsertest.cc

Index: chrome/browser/ui/webui/constrained_web_dialog_ui_browsertest.cc
diff --git a/chrome/browser/ui/webui/constrained_web_dialog_ui_browsertest.cc b/chrome/browser/ui/webui/constrained_web_dialog_ui_browsertest.cc
index d5624908c645a7d131c79b42d34d1bd8072a8f35..cefbbd5ec82ede9575c19c81f4bc86480ea68d56 100644
--- a/chrome/browser/ui/webui/constrained_web_dialog_ui_browsertest.cc
+++ b/chrome/browser/ui/webui/constrained_web_dialog_ui_browsertest.cc
@@ -28,14 +28,12 @@ class ConstrainedWebDialogBrowserTestObserver
       : content::WebContentsObserver(contents),
         contents_destroyed_(false) {
   }
-  virtual ~ConstrainedWebDialogBrowserTestObserver() {}
+  ~ConstrainedWebDialogBrowserTestObserver() override {}
 
   bool contents_destroyed() { return contents_destroyed_; }
 
  private:
-  virtual void WebContentsDestroyed() override {
-    contents_destroyed_ = true;
-  }
+  void WebContentsDestroyed() override { contents_destroyed_ = true; }
 
   bool contents_destroyed_;
 };