Revert of Adds ozone support for ime keyboard.

chromeos/ime/ime_keyboard_x11.h

Index: chromeos/ime/ime_keyboard_x11.h
diff --git a/chromeos/ime/ime_keyboard_x11.h b/chromeos/ime/ime_keyboard_x11.h
index 7548903cc7108ee3ef242a969bfd34894246288c..10ac01a1159c4e8b932cbf802426f5c71a44ed32 100644
--- a/chromeos/ime/ime_keyboard_x11.h
+++ b/chromeos/ime/ime_keyboard_x11.h
@@ -38,6 +38,10 @@
   ImeKeyboardX11();
   virtual ~ImeKeyboardX11();
 
+  // Adds/removes observer.
+  virtual void AddObserver(Observer* observer) override;
+  virtual void RemoveObserver(Observer* observer) override;
+
   // ImeKeyboard:
   virtual bool SetCurrentKeyboardLayoutByName(
       const std::string& layout_name) override;
@@ -46,6 +50,8 @@
   virtual void DisableNumLock() override;
   virtual void SetCapsLockEnabled(bool enable_caps_lock) override;
   virtual bool CapsLockIsEnabled() override;
+  virtual bool IsISOLevel5ShiftAvailable() const override;
+  virtual bool IsAltGrAvailable() const override;
   virtual bool SetAutoRepeatEnabled(bool enabled) override;
   virtual bool SetAutoRepeatRate(const AutoRepeatRate& rate) override;
 
@@ -75,12 +81,20 @@
   const bool is_running_on_chrome_os_;
   unsigned int num_lock_mask_;
 
+  // The current Caps Lock status. If true, enabled.
+  bool current_caps_lock_status_;
+
+  // The XKB layout name which we set last time like "us" and "us(dvorak)".
+  std::string current_layout_name_;
+
   // A queue for executing setxkbmap one by one.
   std::queue<std::string> execute_queue_;
 
   base::ThreadChecker thread_checker_;
 
   base::WeakPtrFactory<ImeKeyboardX11> weak_factory_;
+
+  ObserverList<Observer> observers_;
 
   DISALLOW_COPY_AND_ASSIGN(ImeKeyboardX11);
 };