SELECT element: Add HTMLSelectElement::selectedListIndex().

third_party/WebKit/Source/core/html/HTMLSelectElement.h

 /*
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ skipping 37 matching lines @@
 
 class CORE_EXPORT HTMLSelectElement final : public HTMLFormControlElementWithState, private TypeAheadDataSource {
     DEFINE_WRAPPERTYPEINFO();
 public:
     static HTMLSelectElement* create(Document&);
     static HTMLSelectElement* create(Document&, HTMLFormElement*);
     ~HTMLSelectElement() override;
 
     int selectedIndex() const;
     void setSelectedIndex(int);
+    // `listIndex' version of |selectedIndex|.
+    int selectedListIndex() const;
 
     // For ValidityState
     String validationMessage() const override;
     bool valueMissing() const override;
 
     String defaultToolTip() const override;
     void resetImpl() override;
 
     unsigned length() const;
     void setLength(unsigned, ExceptionState&);
@@ skipping 226 matching lines @@
 
     FRIEND_TEST_ALL_PREFIXES(HTMLSelectElementTest, FirstSelectableOption);
     FRIEND_TEST_ALL_PREFIXES(HTMLSelectElementTest, LastSelectableOption);
     FRIEND_TEST_ALL_PREFIXES(HTMLSelectElementTest, NextSelectableOption);
     FRIEND_TEST_ALL_PREFIXES(HTMLSelectElementTest, PreviousSelectableOption);
 };
 
 } // namespace blink
 
 #endif // HTMLSelectElement_h