Clean Up: remove unused variable selection_item_id

chrome/browser/chromeos/input_method/input_method_property.h

 // Copyright (c) 2012 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 CHROME_BROWSER_CHROMEOS_INPUT_METHOD_INPUT_METHOD_PROPERTY_H_
 #define CHROME_BROWSER_CHROMEOS_INPUT_METHOD_INPUT_METHOD_PROPERTY_H_
 
 #include <string>
 #include <vector>
 
 namespace chromeos {
 namespace input_method {
 
 // A structure which represents a property for an input method engine.
 struct InputMethodProperty {
   InputMethodProperty(const std::string& in_key,
                       const std::string& in_label,
                       bool in_is_selection_item,
-                      bool in_is_selection_item_checked,
-                      int in_selection_item_id);
+                      bool in_is_selection_item_checked);
 
   InputMethodProperty();
   ~InputMethodProperty();
 
   bool operator==(const InputMethodProperty& other) const;
   bool operator!=(const InputMethodProperty& other) const;
 
   // Debug print function.
   std::string ToString() const;
 
   std::string key;  // A key which identifies the property. Non-empty string.
                     // (e.g. "InputMode.HalfWidthKatakana")
   std::string label;  // A description of the property. Non-empty string.
                       // (e.g. "Switch to full punctuation mode", "Hiragana")
   bool is_selection_item;  // true if the property is a selection item.
   bool is_selection_item_checked;  // true if |is_selection_item| is true and
                                    // the selection_item is selected.
-  int selection_item_id;  // A group ID (>= 0) of the selection item.
-                          // kInvalidSelectionItemId if |is_selection_item| is
-                          // false.
-  static const int kInvalidSelectionItemId = -1;
 };
 typedef std::vector<InputMethodProperty> InputMethodPropertyList;
 
 }  // namespace input_method
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_INPUT_METHOD_INPUT_METHOD_PROPERTY_H_