virtual/override specifier cleanup in ui/ (mostly Ozone code).

ui/events/ozone/layout/no/no_keyboard_layout_engine.h

Index: ui/events/ozone/layout/no/no_keyboard_layout_engine.h
diff --git a/ui/events/ozone/layout/no/no_keyboard_layout_engine.h b/ui/events/ozone/layout/no/no_keyboard_layout_engine.h
index f9cb6fe9006720823538afd949b4cefc6c9bcc16..00cbda9685c85ce7a36e3027a003cc229b42c2f7 100644
--- a/ui/events/ozone/layout/no/no_keyboard_layout_engine.h
+++ b/ui/events/ozone/layout/no/no_keyboard_layout_engine.h
@@ -14,19 +14,19 @@ class EVENTS_OZONE_LAYOUT_EXPORT NoKeyboardLayoutEngine
     : public KeyboardLayoutEngine {
  public:
   NoKeyboardLayoutEngine() {}
-  virtual ~NoKeyboardLayoutEngine() {}
+  ~NoKeyboardLayoutEngine() override {}
 
   // KeyboardLayoutEngine overrides:
-  virtual bool CanSetCurrentLayout() const override;
-  virtual bool SetCurrentLayoutByName(const std::string& layout_name) override;
-  virtual bool UsesISOLevel5Shift() const override;
-  virtual bool UsesAltGr() const override;
-  virtual bool Lookup(DomCode dom_code,
-                      int flags,
-                      DomKey* dom_key,
-                      base::char16* character,
-                      KeyboardCode* key_code,
-                      uint32* platform_keycode) const override;
+  bool CanSetCurrentLayout() const override;
+  bool SetCurrentLayoutByName(const std::string& layout_name) override;
+  bool UsesISOLevel5Shift() const override;
+  bool UsesAltGr() const override;
+  bool Lookup(DomCode dom_code,
+              int flags,
+              DomKey* dom_key,
+              base::char16* character,
+              KeyboardCode* key_code,
+              uint32* platform_keycode) const override;
 };
 
 }  // namespace ui