Track reasons for |Node::SetNeedsStyleRecalc|

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 628 matching lines @@
         HTMLElement* element = items[i];
         m_cachedStateForActiveSelection.append(isHTMLOptionElement(*element) && toHTMLOptionElement(element)->selected());
     }
 }
 
 void HTMLSelectElement::setActiveSelectionEndIndex(int index)
 {
     if (index == m_activeSelectionEndIndex)
         return;
     m_activeSelectionEndIndex = index;
-    setNeedsStyleRecalc(SubtreeStyleChange);
+    setNeedsStyleRecalc(StyleChangeReasonForTracing::Control, SubtreeStyleChange);
 }
 
 void HTMLSelectElement::updateListBoxSelection(bool deselectOtherOptions)
 {
     ASSERT(renderer() && (renderer()->isListBox() || m_multiple));
     ASSERT(!listItems().size() || m_activeSelectionAnchorIndex >= 0);
 
     unsigned start = std::min(m_activeSelectionAnchorIndex, m_activeSelectionEndIndex);
     unsigned end = std::max(m_activeSelectionAnchorIndex, m_activeSelectionEndIndex);
 
@@ skipping 103 matching lines @@
 
 void HTMLSelectElement::setRecalcListItems()
 {
     // FIXME: This function does a bunch of confusing things depending on if it
     // is in the document or not.
 
     m_shouldRecalcListItems = true;
     // Manual selection anchor is reset when manipulating the select programmatically.
     m_activeSelectionAnchorIndex = -1;
     setOptionsChangedOnRenderer();
-    setNeedsStyleRecalc(SubtreeStyleChange);
+    setNeedsStyleRecalc(StyleChangeReasonForTracing::ControlValue, SubtreeStyleChange);
     if (!inDocument()) {
         if (HTMLOptionsCollection* collection = cachedCollection<HTMLOptionsCollection>(SelectOptions))
             collection->invalidateCache();
     }
     if (!inDocument())
         invalidateSelectedItems();
 
     if (renderer()) {
         if (AXObjectCache* cache = renderer()->document().existingAXObjectCache())
             cache->childrenChanged(this);
@@ skipping 361 matching lines @@
             toHTMLOptionElement(element)->setSelectedState(false);
 
         if (!firstOption)
             firstOption = toHTMLOptionElement(element);
     }
 
     if (!selectedOption && firstOption && !m_multiple && m_size <= 1)
         firstOption->setSelectedState(true);
 
     setOptionsChangedOnRenderer();
-    setNeedsStyleRecalc(SubtreeStyleChange);
+    setNeedsStyleRecalc(StyleChangeReasonForTracing::ControlValue, SubtreeStyleChange);
     setNeedsValidityCheck();
 }
 
 void HTMLSelectElement::handlePopupOpenKeyboardEvent(Event* event)
 {
     focus();
     // Calling focus() may cause us to lose our renderer. Return true so
     // that our caller doesn't process the event further, but don't set
     // the event as handled.
     if (!renderer() || !renderer()->isMenuList() || isDisabledFormControl())
@@ skipping 573 matching lines @@
     int focusedIndex = activeSelectionEndListIndex();
     if (focusedIndex < 0)
         focusedIndex = firstSelectableListIndex();
     if (focusedIndex < 0)
         return nullptr;
     HTMLElement* focused = listItems()[focusedIndex];
     return isHTMLOptionElement(focused) ? toHTMLOptionElement(focused) : nullptr;
 }
 
 } // namespace