Revert of Made ElementRareData store ComputedStyle on LayoutObject if possible.

third_party/WebKit/Source/core/dom/ElementRareData.h

 /*
  * Copyright (C) 2008, 2009, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2008 David Smith <catfish.man@gmail.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
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 74 matching lines @@
     ElementShadow& ensureShadow()
     {
         if (!m_shadow)
             m_shadow = ElementShadow::create();
         return *m_shadow;
     }
 
     NamedNodeMap* attributeMap() const { return m_attributeMap.get(); }
     void setAttributeMap(NamedNodeMap* attributeMap) { m_attributeMap = attributeMap; }
 
-    ComputedStyle* computedStyle() const
-    {
-        DCHECK(!(layoutObject() && m_computedStyle));
-        if (layoutObject())
-            return layoutObject()->mutableStyle();
-        return m_computedStyle.get();
-    }
-    void setComputedStyle(PassRefPtr<ComputedStyle> computedStyle)
-    {
-        if (layoutObject())
-            layoutObject()->setStyleInternal(std::move(computedStyle));
-        else
-            m_computedStyle = computedStyle;
-    }
-    void clearComputedStyleIfNoLayoutObject()
-    {
-        DCHECK(!(layoutObject() && m_computedStyle));
-        m_computedStyle = nullptr;
-    }
+    ComputedStyle* computedStyle() const { return m_computedStyle.get(); }
+    void setComputedStyle(PassRefPtr<ComputedStyle> computedStyle) { m_computedStyle = computedStyle; }
+    void clearComputedStyle() { m_computedStyle = nullptr; }
 
     ClassList* classList() const { return m_classList.get(); }
     void setClassList(ClassList* classList) { m_classList = classList; }
     void clearClassListValueForQuirksMode()
     {
         if (!m_classList)
             return;
         m_classList->clearValueForQuirksMode();
     }
 
@@ skipping 140 matching lines @@
 inline CompositorProxiedPropertySet& ElementRareData::ensureCompositorProxiedPropertySet()
 {
     if (!m_proxiedProperties)
         m_proxiedProperties = CompositorProxiedPropertySet::create();
     return *m_proxiedProperties;
 }
 
 } // namespace blink
 
 #endif // ElementRareData_h