Remove candidate show/hide/update related code

ui/views/controls/prefix_selector.h

 // Copyright 2013 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.
 
 #ifndef UI_VIEWS_CONTROLS_PREFIX_SELECTOR_H_
 #define UI_VIEWS_CONTROLS_PREFIX_SELECTOR_H_
 
 #include "base/strings/string16.h"
 #include "base/time/time.h"
 #include "ui/base/ime/text_input_client.h"
@@ skipping 33 matching lines @@
   bool GetSelectionRange(gfx::Range* range) const override;
   bool SetSelectionRange(const gfx::Range& range) override;
   bool DeleteRange(const gfx::Range& range) override;
   bool GetTextFromRange(const gfx::Range& range,
                         base::string16* text) const override;
   void OnInputMethodChanged() override;
   bool ChangeTextDirectionAndLayoutAlignment(
       base::i18n::TextDirection direction) override;
   void ExtendSelectionAndDelete(size_t before, size_t after) override;
   void EnsureCaretInRect(const gfx::Rect& rect) override;
-  void OnCandidateWindowShown() override;
-  void OnCandidateWindowUpdated() override;
-  void OnCandidateWindowHidden() override;
 
   bool IsEditCommandEnabled(int command_id) override;
   void SetEditCommandForNextKeyEvent(int command_id) override;
 
  private:
   // Invoked when text is typed. Tries to change the selection appropriately.
   void OnTextInput(const base::string16& text);
 
   // Returns true if the text of the node at |row| starts with |lower_text|.
   bool TextAtRowMatchesText(int row, const base::string16& lower_text);
 
   // Clears |current_text_| and resets |time_of_last_key_|.
   void ClearText();
 
   PrefixDelegate* prefix_delegate_;
 
   // Time OnTextInput() was last invoked.
   base::TimeTicks time_of_last_key_;
 
   base::string16 current_text_;
 
   DISALLOW_COPY_AND_ASSIGN(PrefixSelector);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_CONTROLS_PREFIX_SELECTOR_H_