WIP: Add a dummy 8 byte to CSSValue

Source/core/css/CSSValue.h

 /*
  * (C) 1999-2003 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. 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.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 26 matching lines @@
     // Override operator new to allocate CSSValue subtype objects onto
     // a dedicated heap.
     GC_PLUGIN_IGNORE("crbug.com/443854")
     void* operator new(size_t size)
     {
         return allocateObject(size, false);
     }
     static void* allocateObject(size_t size, bool isEager)
     {
         ThreadState* state = ThreadStateFor<ThreadingTrait<CSSValue>::Affinity>::state();
-        return Heap::allocateOnHeapIndex(state, size, isEager ? ThreadState::EagerSweepHeapIndex : ThreadState::CSSValueHeapIndex, GCInfoTrait<CSSValue>::index());
+        return Heap::allocateOnHeapIndex(state, size + 8, isEager ? ThreadState::EagerSweepHeapIndex : ThreadState::CSSValueHeapIndex, GCInfoTrait<CSSValue>::index());
     }
 #else
     // Override RefCounted's deref() to ensure operator delete is called on
     // the appropriate subclass type.
     void deref()
     {
         if (derefBase())
             destroy();
     }
 #endif // !ENABLE(OILPAN)
@@ skipping 183 matching lines @@
         return false;
     return first->equals(*second);
 }
 
 #define DEFINE_CSS_VALUE_TYPE_CASTS(thisType, predicate) \
     DEFINE_TYPE_CASTS(thisType, CSSValue, value, value->predicate, value.predicate)
 
 } // namespace blink
 
 #endif // CSSValue_h