Revert of Adds ozone support for ime keyboard.

chromeos/ime/ime_keyboard.h

Index: chromeos/ime/ime_keyboard.h
diff --git a/chromeos/ime/ime_keyboard.h b/chromeos/ime/ime_keyboard.h
index 109485a6c9468eacfa604bf0ec6775f31c45291b..cca70eca6e4174cd2392b48189b5a3fb1bf8a3f6 100644
--- a/chromeos/ime/ime_keyboard.h
+++ b/chromeos/ime/ime_keyboard.h
@@ -9,7 +9,6 @@
 #include <vector>
 
 #include "base/basictypes.h"
-#include "base/observer_list.h"
 #include "chromeos/chromeos_export.h"
 
 namespace chromeos {
@@ -43,11 +42,11 @@
     virtual void OnCapsLockChanged(bool enabled) = 0;
   };
 
-  ImeKeyboard();
-  virtual ~ImeKeyboard();
+  virtual ~ImeKeyboard() {}
+
   // Adds/removes observer.
-  virtual void AddObserver(Observer* observer);
-  virtual void RemoveObserver(Observer* observer);
+  virtual void AddObserver(Observer* observer) = 0;
+  virtual void RemoveObserver(Observer* observer) = 0;
 
   // Sets the current keyboard layout to |layout_name|. This function does not
   // change the current mapping of the modifier keys. Returns true on success.
@@ -75,17 +74,17 @@
 
   // Sets the caps lock status to |enable_caps_lock|. Do not call the function
   // from non-UI threads.
-  virtual void SetCapsLockEnabled(bool enable_caps_lock);
+  virtual void SetCapsLockEnabled(bool enable_caps_lock) = 0;
 
   // Returns true if caps lock is enabled. Do not call the function from non-UI
   // threads.
-  virtual bool CapsLockIsEnabled();
+  virtual bool CapsLockIsEnabled() = 0;
 
   // Returns true if the current layout supports ISO Level 5 shift.
-  virtual bool IsISOLevel5ShiftAvailable() const;
+  virtual bool IsISOLevel5ShiftAvailable() const = 0;
 
   // Returns true if the current layout supports alt gr.
-  virtual bool IsAltGrAvailable() const;
+  virtual bool IsAltGrAvailable() const = 0;
 
   // Turns on and off the auto-repeat of the keyboard. Returns true on success.
   // Do not call the function from non-UI threads.
@@ -112,12 +111,6 @@
   // Note: At this moment, classes other than InputMethodManager should not
   // instantiate the ImeKeyboard class.
   static ImeKeyboard* Create();
-
-  bool caps_lock_is_enabled_;
-  std::string last_layout_;
-
- protected:
-  ObserverList<Observer> observers_;
 };
 
 }  // namespace input_method