Implement PopupMenu::updateFromElement() for ExternalPopupMenu.

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

 /*
  * 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) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2009, 2010, 2011 Apple Inc. All rights reserved.
  *           (C) 2006 Alexey Proskuryakov (ap@nypop.com)
  * Copyright (C) 2010 Google Inc. All rights reserved.
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
@@ skipping 1966 matching lines @@
     if (document().frameHost()->chromeClient().hasOpenedPopup())
         return;
     if (!layoutObject() || !layoutObject()->isMenuList())
         return;
 
     if (!m_popup)
         m_popup = document().frameHost()->chromeClient().openPopupMenu(*document().frame(), *this);
     m_popupIsVisible = true;
 
     LayoutMenuList* menuList = toLayoutMenuList(layoutObject());
-    FloatQuad quad(menuList->localToAbsoluteQuad(FloatQuad(menuList->borderBoundingBox())));
     IntSize size = pixelSnappedIntRect(menuList->frameRect()).size();
-    m_popup->show(quad, size, optionToListIndex(selectedIndex()));
+    // TODO(tkent): Remove show() arguments.  They are unused.
+    m_popup->show(FloatQuad(), size, optionToListIndex(selectedIndex()));
     if (AXObjectCache* cache = document().existingAXObjectCache())
         cache->didShowMenuListPopup(menuList);
 }
 
 void HTMLSelectElement::hidePopup()
 {
     if (m_popup)
         m_popup->hide();
 }
 
@@ skipping 12 matching lines @@
     m_popupIsVisible = false;
     m_popup = nullptr;
 }
 
 void HTMLSelectElement::resetTypeAheadSessionForTesting()
 {
     m_typeAhead.resetSession();
 }
 
 } // namespace blink