SELECT element: Do not update popup menu content by touching selectedIndex

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
@@ skipping 217 matching lines @@
 
   bool hasPlaceholderLabelOption() const;
 
   enum SelectOptionFlag {
     DeselectOtherOptions = 1 << 0,
     DispatchInputAndChangeEvent = 1 << 1,
     MakeOptionDirty = 1 << 2,
   };
   typedef unsigned SelectOptionFlags;
   void selectOption(HTMLOptionElement*, SelectOptionFlags);
-  void deselectItemsWithoutValidation(
+  bool deselectItemsWithoutValidation(
       HTMLOptionElement* elementToExclude = nullptr);
   void parseMultipleAttribute(const AtomicString&);
   HTMLOptionElement* lastSelectedOption() const;
   void updateSelectedState(HTMLOptionElement*, bool multi, bool shift);
   void menuListDefaultEventHandler(Event*);
   void handlePopupOpenKeyboardEvent(Event*);
   bool shouldOpenPopupForKeyDownEvent(KeyboardEvent*);
   bool shouldOpenPopupForKeyPressEvent(KeyboardEvent*);
   void listBoxDefaultEventHandler(Event*);
   void setOptionsChangedOnLayoutObject();
@@ skipping 57 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