Set ComputedStyle on Node and use that in buildOwnLayout()

third_party/WebKit/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 145 matching lines @@
 }
 
 void HTMLTextAreaElement::parseAttribute(const QualifiedName& name, const AtomicString& oldValue, const AtomicString& value)
 {
     if (name == rowsAttr) {
         unsigned rows = 0;
         if (value.isEmpty() || !parseHTMLNonNegativeInteger(value, rows) || rows <= 0)
             rows = defaultRows;
         if (m_rows != rows) {
             m_rows = rows;
-            if (layoutObject())
+            if (hasLayoutObject())
                 layoutObject()->setNeedsLayoutAndPrefWidthsRecalcAndFullPaintInvalidation(LayoutInvalidationReason::AttributeChanged);
         }
     } else if (name == colsAttr) {
         unsigned cols = 0;
         if (value.isEmpty() || !parseHTMLNonNegativeInteger(value, cols) || cols <= 0)
             cols = defaultCols;
         if (m_cols != cols) {
             m_cols = cols;
             if (LayoutObject* layoutObject = this->layoutObject())
                 layoutObject->setNeedsLayoutAndPrefWidthsRecalcAndFullPaintInvalidation(LayoutInvalidationReason::AttributeChanged);
@@ skipping 496 matching lines @@
 
 void HTMLTextAreaElement::copyNonAttributePropertiesFromElement(const Element& source)
 {
     const HTMLTextAreaElement& sourceElement = static_cast<const HTMLTextAreaElement&>(source);
     setValueCommon(sourceElement.value(), DispatchNoEvent, SetSeletion);
     m_isDirty = sourceElement.m_isDirty;
     HTMLTextFormControlElement::copyNonAttributePropertiesFromElement(source);
 }
 
 } // namespace blink