Revert of Adds ozone support for ime keyboard.

chromeos/ime/ime_keyboard_x11.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 
 #include "chromeos/ime/ime_keyboard.h"
 
 #include <cstdlib>
 #include <cstring>
 #include <queue>
@@ skipping 20 matching lines @@
 
 namespace chromeos {
 namespace input_method {
 namespace {
 
 class ImeKeyboardX11 : public ImeKeyboard {
  public:
   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;
   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 IsISOLevel5ShiftAvailable() const override;
+  virtual bool IsAltGrAvailable() const override;
   virtual bool SetAutoRepeatEnabled(bool enabled) override;
   virtual bool SetAutoRepeatRate(const AutoRepeatRate& rate) override;
 
  private:
   // Returns a mask for Num Lock (e.g. 1U << 4). Returns 0 on error.
   unsigned int GetNumLockMask();
 
   // Sets the caps-lock status. Note that calling this function always disables
   // the num-lock.
   void SetLockedModifiers(bool caps_lock_enabled);
 
   // This function is used by SetLayout() and RemapModifierKeys(). Calls
   // setxkbmap command if needed, and updates the last_full_layout_name_ cache.
   bool SetLayoutInternal(const std::string& layout_name, bool force);
 
   // Executes 'setxkbmap -layout ...' command asynchronously using a layout name
   // in the |execute_queue_|. Do nothing if the queue is empty.
   // TODO(yusukes): Use libxkbfile.so instead of the command (crosbug.com/13105)
   void MaybeExecuteSetLayoutCommand();
 
   // Polls to see setxkbmap process exits.
   void PollUntilChildFinish(const base::ProcessHandle handle);
 
   // Called when execve'd setxkbmap process exits.
   void OnSetLayoutFinish();
 
   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);
 };
 
 
 }  // namespace
 
 } // namespace input_method
 } // namespace chromeos