Introduce few const getters for dom classes

third_party/WebKit/Source/core/dom/ElementRareData.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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 31 matching lines @@
     Member<void*> persistentMember[2];
 };
 
 CSSStyleDeclaration& ElementRareData::ensureInlineCSSStyleDeclaration(Element* ownerElement)
 {
     if (!m_cssomWrapper)
         m_cssomWrapper = new InlineCSSStyleDeclaration(ownerElement);
     return *m_cssomWrapper;
 }
 
+CSSStyleDeclaration* ElementRareData::inlineCSSStyleDeclaration() const
+{
+    return m_cssomWrapper;
+}
+
 AttrNodeList& ElementRareData::ensureAttrNodeList()
 {
     if (!m_attrNodeList)
         m_attrNodeList = new AttrNodeList;
     return *m_attrNodeList;
 }
 
 DEFINE_TRACE_AFTER_DISPATCH(ElementRareData)
 {
     visitor->trace(m_dataset);
     visitor->trace(m_classList);
     visitor->trace(m_shadow);
     visitor->trace(m_attributeMap);
     visitor->trace(m_attrNodeList);
     visitor->trace(m_elementAnimations);
     visitor->trace(m_cssomWrapper);
     visitor->trace(m_customElementDefinition);
     visitor->trace(m_generatedBefore);
     visitor->trace(m_generatedAfter);
     visitor->trace(m_generatedFirstLetter);
     visitor->trace(m_backdrop);
     visitor->trace(m_intersectionObserverData);
     NodeRareData::traceAfterDispatch(visitor);
 }
 
 static_assert(sizeof(ElementRareData) == sizeof(SameSizeAsElementRareData), "ElementRareData should stay small");
 
 } // namespace blink