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 10ac01a1159c4e8b932cbf802426f5c71a44ed32..6ad16b480ff679d257f9283f47a35bba49357297 100644
--- a/chromeos/ime/ime_keyboard_x11.h
+++ b/chromeos/ime/ime_keyboard_x11.h
@@ -38,10 +38,6 @@ class ImeKeyboardX11 : public ImeKeyboard {
   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;
@@ -81,12 +77,6 @@ class ImeKeyboardX11 : public ImeKeyboard {
   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_;
 
@@ -94,8 +84,6 @@ class ImeKeyboardX11 : public ImeKeyboard {
 
   base::WeakPtrFactory<ImeKeyboardX11> weak_factory_;
 
-  ObserverList<Observer> observers_;
-
   DISALLOW_COPY_AND_ASSIGN(ImeKeyboardX11);
 };