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

chrome/browser/ui/panels/panel_mouse_watcher_unittest.cc

Index: chrome/browser/ui/panels/panel_mouse_watcher_unittest.cc
diff --git a/chrome/browser/ui/panels/panel_mouse_watcher_unittest.cc b/chrome/browser/ui/panels/panel_mouse_watcher_unittest.cc
index 82e6dacf96f357be6aeb15730a48f564d44ddc8f..4dc3d4258ef8cfea2926fb3d6d64a109d920492e 100644
--- a/chrome/browser/ui/panels/panel_mouse_watcher_unittest.cc
+++ b/chrome/browser/ui/panels/panel_mouse_watcher_unittest.cc
@@ -13,7 +13,7 @@ class TestMouseObserver : public PanelMouseWatcherObserver {
  public:
   TestMouseObserver() : mouse_movements_(0) {}
   // Overridden from PanelMouseWatcherObserver:
-  virtual void OnMouseMove(const gfx::Point& mouse_position) override {
+  void OnMouseMove(const gfx::Point& mouse_position) override {
     ++mouse_movements_;
   }
   int mouse_movements_;