Track reasons for |Node::SetNeedsStyleRecalc|

Source/core/html/HTMLTextAreaElement.cpp

 /*
  * 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, 2008, 2010 Apple Inc. All rights reserved.
  *           (C) 2006 Alexey Proskuryakov (ap@nypop.com)
  * Copyright (C) 2007 Samuel Weinig (sam@webkit.org)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ skipping 358 matching lines @@
             }
         }
         return;
     }
 
     m_value = normalizedValue;
     setInnerEditorValue(m_value);
     if (eventBehavior == DispatchNoEvent)
         setLastChangeWasNotUserEdit();
     updatePlaceholderVisibility(false);
-    setNeedsStyleRecalc(SubtreeStyleChange);
+    setNeedsStyleRecalc(StyleChangeReasonForTracing::ControlValue, SubtreeStyleChange);
     m_suggestedValue = String();
     setNeedsValidityCheck();
     if (isFinishedParsingChildren()) {
         // Set the caret to the end of the text value except for initialize.
         unsigned endOfString = m_value.length();
         setSelectionRange(endOfString, endOfString, SelectionHasNoDirection, NotChangeSelection);
     }
 
     notifyFormStateChanged();
     if (eventBehavior == DispatchNoEvent) {
@@ skipping 71 matching lines @@
 
 void HTMLTextAreaElement::setSuggestedValue(const String& value)
 {
     m_suggestedValue = value;
 
     if (!value.isNull())
         setInnerEditorValue(m_suggestedValue);
     else
         setInnerEditorValue(m_value);
     updatePlaceholderVisibility(false);
-    setNeedsStyleRecalc(SubtreeStyleChange);
+    setNeedsStyleRecalc(StyleChangeReasonForTracing::ControlValue, SubtreeStyleChange);
 }
 
 String HTMLTextAreaElement::validationMessage() const
 {
     if (!willValidate())
         return String();
 
     if (customError())
         return customValidationMessage();
 
@@ skipping 82 matching lines @@
 {
     return true;
 }
 
 bool HTMLTextAreaElement::supportsAutofocus() const
 {
     return true;
 }
 
 }