Track reasons for |Node::SetNeedsStyleRecalc|

Source/core/html/shadow/DateTimeEditElement.cpp

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
  *     notice, this list of conditions and the following disclaimer in the
@@ skipping 679 matching lines @@
         if (DateTimeFieldElement* field = fieldAt(std::min(focusedFieldIndex, m_fields.size() - 1)))
             field->focus();
     }
 
     if (lastChildToBeRemoved) {
         for (Node* childNode = fieldsWrapper->firstChild(); childNode; childNode = fieldsWrapper->firstChild()) {
             fieldsWrapper->removeChild(childNode);
             if (childNode == lastChildToBeRemoved)
                 break;
         }
-        setNeedsStyleRecalc(SubtreeStyleChange);
+        setNeedsStyleRecalc(SubtreeStyleChange, StyleChangeReasonForTracing::create(StyleChangeReason::Control));
     }
 }
 
 AtomicString DateTimeEditElement::localeIdentifier() const
 {
     return m_editControlOwner ? m_editControlOwner->localeIdentifier() : nullAtom;
 }
 
 void DateTimeEditElement::fieldDidChangeValueByKeyboard()
 {
@@ skipping 97 matching lines @@
 {
     DateTimeFieldsState dateTimeFieldsState;
     for (size_t fieldIndex = 0; fieldIndex < m_fields.size(); ++fieldIndex)
         m_fields[fieldIndex]->populateDateTimeFieldsState(dateTimeFieldsState);
     return dateTimeFieldsState;
 }
 
 } // namespace blink
 
 #endif