Set ComputedStyle on Node and use that in buildOwnLayout()

third_party/WebKit/Source/core/html/HTMLFormControlElement.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 Apple Inc. All rights reserved.
  *           (C) 2006 Alexey Proskuryakov (ap@nypop.com)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
@@ skipping 139 matching lines @@
         formAttributeChanged();
         UseCounter::count(document(), UseCounter::FormAttribute);
     } else if (name == disabledAttr) {
         if (oldValue.isNull() != value.isNull())
             disabledAttributeChanged();
     } else if (name == readonlyAttr) {
         if (oldValue.isNull() != value.isNull()) {
             setNeedsWillValidateCheck();
             pseudoStateChanged(CSSSelector::PseudoReadOnly);
             pseudoStateChanged(CSSSelector::PseudoReadWrite);
-            if (layoutObject())
+            if (hasLayoutObject())
                 LayoutTheme::theme().controlStateChanged(*layoutObject(), ReadOnlyControlState);
         }
     } else if (name == requiredAttr) {
         if (oldValue.isNull() != value.isNull())
             requiredAttributeChanged();
         UseCounter::count(document(), UseCounter::RequiredAttribute);
     } else if (name == autofocusAttr) {
         HTMLElement::parseAttribute(name, oldValue, value);
         UseCounter::count(document(), UseCounter::AutoFocusAttribute);
     } else {
         HTMLElement::parseAttribute(name, oldValue, value);
     }
 }
 
 void HTMLFormControlElement::disabledAttributeChanged()
 {
     setNeedsWillValidateCheck();
     pseudoStateChanged(CSSSelector::PseudoDisabled);
     pseudoStateChanged(CSSSelector::PseudoEnabled);
-    if (layoutObject())
+    if (hasLayoutObject())
         LayoutTheme::theme().controlStateChanged(*layoutObject(), EnabledControlState);
     if (isDisabledFormControl() && adjustedFocusedElementInTreeScope() == this) {
         // We might want to call blur(), but it's dangerous to dispatch events
         // here.
         document().setNeedsFocusedElementCheck();
     }
 }
 
 void HTMLFormControlElement::requiredAttributeChanged()
 {
@@ skipping 463 matching lines @@
         dispatchFormControlChangeEvent();
 }
 
 void HTMLFormControlElement::copyNonAttributePropertiesFromElement(const Element& source)
 {
     HTMLElement::copyNonAttributePropertiesFromElement(source);
     setNeedsValidityCheck();
 }
 
 } // namespace blink