[Oilpan] Prepare full definition of classes before using Member

third_party/WebKit/Source/core/css/PropertySetCSSStyleDeclaration.cpp

 /*
  * (C) 1999-2003 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2011 Research In Motion Limited. All rights reserved.
  *
  * 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
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 331 matching lines @@
     m_propertySet->ref();
 #endif
 }
 
 DEFINE_TRACE(StyleRuleCSSStyleDeclaration)
 {
     visitor->trace(m_parentRule);
     PropertySetCSSStyleDeclaration::trace(visitor);
 }
 
+InlineCSSStyleDeclaration::InlineCSSStyleDeclaration(Element* parentElement)
+    : m_parentElement(parentElement)
+{
+}
+
 MutableStylePropertySet& InlineCSSStyleDeclaration::propertySet() const
 {
     return m_parentElement->ensureMutableInlineStyle();
 }
 
 void InlineCSSStyleDeclaration::didMutate(MutationType type)
 {
     if (type == NoChanges)
         return;
 
     if (!m_parentElement)
         return;
 
     m_parentElement->clearMutableInlineStyleIfEmpty();
     m_parentElement->setNeedsStyleRecalc(LocalStyleChange, StyleChangeReasonForTracing::create(StyleChangeReason::InlineCSSStyleMutated));
     m_parentElement->invalidateStyleAttribute();
     StyleAttributeMutationScope(this).didInvalidateStyleAttr();
 }
 
 CSSStyleSheet* InlineCSSStyleDeclaration::parentStyleSheet() const
 {
     return m_parentElement ? &m_parentElement->document().elementSheet() : nullptr;
 }
 
+Element* InlineCSSStyleDeclaration::parentElement() const
+{
+    return m_parentElement;
+}
+
 #if !ENABLE(OILPAN)
 void InlineCSSStyleDeclaration::ref()
 {
     m_parentElement->ref();
 }
 
 void InlineCSSStyleDeclaration::deref()
 {
     m_parentElement->deref();
 }
 #endif
 
 DEFINE_TRACE(InlineCSSStyleDeclaration)
 {
     visitor->trace(m_parentElement);
     AbstractPropertySetCSSStyleDeclaration::trace(visitor);
 }
 
 } // namespace blink