Remove candidate show/hide/update related code

ui/base/ime/input_method_base.h

Index: ui/base/ime/input_method_base.h
diff --git a/ui/base/ime/input_method_base.h b/ui/base/ime/input_method_base.h
index d014500717aeb0cf64422d27be277829ff338590..63783880dba9c24d3a88317772f74a3911cd7481 100644
--- a/ui/base/ime/input_method_base.h
+++ b/ui/base/ime/input_method_base.h
@@ -85,14 +85,6 @@ class UI_BASE_IME_EXPORT InputMethodBase
   // |client| which is the text input client with focus.
   void NotifyTextInputCaretBoundsChanged(const TextInputClient* client);
 
-  // Interface for for signalling candidate window events.
-  // See also *Callback functions below. To avoid reentrancy issue that
-  // TextInputClient manipulates IME state during even handling, these methods
-  // defer sending actual signals to renderer.
-  void OnCandidateWindowShown();
-  void OnCandidateWindowUpdated();
-  void OnCandidateWindowHidden();
-
   bool system_toplevel_window_focused() const {
     return system_toplevel_window_focused_;
   }
@@ -100,12 +92,6 @@ class UI_BASE_IME_EXPORT InputMethodBase
  private:
   void SetFocusedTextInputClientInternal(TextInputClient* client);
 
-  // Deferred callbacks for signalling TextInputClient about candidate window
-  // appearance changes.
-  void CandidateWindowShownCallback();
-  void CandidateWindowUpdatedCallback();
-  void CandidateWindowHiddenCallback();
-
   internal::InputMethodDelegate* delegate_;
   TextInputClient* text_input_client_;