WIP: Reduce sizeof(CSSValue) by 8 byte

Source/core/css/CSSValue.cpp

 /*
  * Copyright (C) 2011 Andreas Kling (kling@webkit.org)
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 46 matching lines @@
 namespace blink {
 
 struct SameSizeAsCSSValue : public RefCountedWillBeGarbageCollectedFinalized<SameSizeAsCSSValue> {
     uint32_t bitfields;
 };
 
 static_assert(sizeof(CSSValue) <= sizeof(SameSizeAsCSSValue), "CSSValue should stay small");
 
 bool CSSValue::isImplicitInitialValue() const
 {
-    return m_classType == InitialClass && toCSSInitialValue(this)->isImplicit();
+    return classType() == InitialClass && toCSSInitialValue(this)->isImplicit();
 }
 
 bool CSSValue::hasFailedOrCanceledSubresources() const
 {
     if (isValueList())
         return toCSSValueList(this)->hasFailedOrCanceledSubresources();
     if (classType() == FontFaceSrcClass)
         return toCSSFontFaceSrcValue(this)->hasFailedOrCanceledSubresources();
     if (classType() == ImageClass)
         return toCSSImageValue(this)->hasFailedOrCanceledSubresources();
     if (classType() == CrossfadeClass)
         return toCSSCrossfadeValue(this)->hasFailedOrCanceledSubresources();
     if (classType() == ImageSetClass)
         return toCSSImageSetValue(this)->hasFailedOrCanceledSubresources();
 
     return false;
 }
 
 template<class ChildClassType>
 inline static bool compareCSSValues(const CSSValue& first, const CSSValue& second)
 {
     return static_cast<const ChildClassType&>(first).equals(static_cast<const ChildClassType&>(second));
 }
 
 bool CSSValue::equals(const CSSValue& other) const
 {
-    if (m_classType == other.m_classType) {
+    if (classType() == other.classType()) {
         switch (classType()) {
         case BorderImageSliceClass:
             return compareCSSValues<CSSBorderImageSliceValue>(*this, other);
         case CanvasClass:
             return compareCSSValues<CSSCanvasValue>(*this, other);
         case CounterClass:
             return compareCSSValues<CSSCounterValue>(*this, other);
         case CursorImageClass:
             return compareCSSValues<CSSCursorImageValue>(*this, other);
         case FontFaceSrcClass:
@@ skipping 382 matching lines @@
         toCSSSVGDocumentValue(this)->traceAfterDispatch(visitor);
         return;
     case CSSContentDistributionClass:
         toCSSContentDistributionValue(this)->traceAfterDispatch(visitor);
         return;
     }
     ASSERT_NOT_REACHED();
 }
 
 }