Standardize usage of virtual/override/final in components/

components/web_modal/web_contents_modal_dialog_manager_unittest.cc

Index: components/web_modal/web_contents_modal_dialog_manager_unittest.cc
diff --git a/components/web_modal/web_contents_modal_dialog_manager_unittest.cc b/components/web_modal/web_contents_modal_dialog_manager_unittest.cc
index e0a1e80dc92719bb51ba942e3e79f4df460b17a2..a22b1dd728160e2a77e0c6b9b5e5089dd2852357 100644
--- a/components/web_modal/web_contents_modal_dialog_manager_unittest.cc
+++ b/components/web_modal/web_contents_modal_dialog_manager_unittest.cc
@@ -53,28 +53,23 @@ class TestNativeWebContentsModalDialogManager
       tracker_->SetState(NativeManagerTracker::NOT_SHOWN);
   }
 
-  virtual void Show() override {
+  void Show() override {
     if (tracker_)
       tracker_->SetState(NativeManagerTracker::SHOWN);
   }
-  virtual void Hide() override {
+  void Hide() override {
     if (tracker_)
       tracker_->SetState(NativeManagerTracker::HIDDEN);
   }
-  virtual void Close() override {
+  void Close() override {
     if (tracker_)
       tracker_->SetState(NativeManagerTracker::CLOSED);
     delegate_->WillClose(dialog_);
   }
-  virtual void Focus() override {
-  }
-  virtual void Pulse() override {
-  }
-  virtual void HostChanged(WebContentsModalDialogHost* new_host) override {
-  }
-  virtual NativeWebContentsModalDialog dialog() override {
-      return dialog_;
-  }
+  void Focus() override {}
+  void Pulse() override {}
+  void HostChanged(WebContentsModalDialogHost* new_host) override {}
+  NativeWebContentsModalDialog dialog() override { return dialog_; }
 
   void StopTracking() {
     tracker_ = NULL;