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

ui/base/ime/chromeos/ime_keyboard_x11.h

Index: ui/base/ime/chromeos/ime_keyboard_x11.h
diff --git a/ui/base/ime/chromeos/ime_keyboard_x11.h b/ui/base/ime/chromeos/ime_keyboard_x11.h
index 966c82dcf8e3ecf0fd976ff8a766add2d0e63186..6faad10891f8415a99758b7b2f80efd5803139ea 100644
--- a/ui/base/ime/chromeos/ime_keyboard_x11.h
+++ b/ui/base/ime/chromeos/ime_keyboard_x11.h
@@ -32,19 +32,18 @@ namespace input_method {
 class UI_BASE_EXPORT ImeKeyboardX11 : public ImeKeyboard {
  public:
   ImeKeyboardX11();
-  virtual ~ImeKeyboardX11();
+  ~ImeKeyboardX11() override;
 
   // ImeKeyboard:
-  virtual bool SetCurrentKeyboardLayoutByName(
-      const std::string& layout_name) override;
-  virtual bool ReapplyCurrentKeyboardLayout() override;
-  virtual void ReapplyCurrentModifierLockStatus() override;
-  virtual void DisableNumLock() override;
-  virtual void SetCapsLockEnabled(bool enable_caps_lock) override;
-  virtual bool CapsLockIsEnabled() override;
-  virtual bool SetAutoRepeatEnabled(bool enabled) override;
-  virtual bool GetAutoRepeatEnabled() override;
-  virtual bool SetAutoRepeatRate(const AutoRepeatRate& rate) override;
+  bool SetCurrentKeyboardLayoutByName(const std::string& layout_name) override;
+  bool ReapplyCurrentKeyboardLayout() override;
+  void ReapplyCurrentModifierLockStatus() override;
+  void DisableNumLock() override;
+  void SetCapsLockEnabled(bool enable_caps_lock) override;
+  bool CapsLockIsEnabled() override;
+  bool SetAutoRepeatEnabled(bool enabled) override;
+  bool GetAutoRepeatEnabled() override;
+  bool SetAutoRepeatRate(const AutoRepeatRate& rate) override;
 
  private:
   // Returns a mask for Num Lock (e.g. 1U << 4). Returns 0 on error.