Oilpan: remove redundant WILL_BE_EAGERLY_TRACED() declarations.

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 168 matching lines @@
     unsigned m_primitiveUnitType : 7; // CSSPrimitiveValue::UnitType
     mutable unsigned m_hasCachedCSSText : 1;
     unsigned m_isQuirkValue : 1;
 
     unsigned m_valueListSeparator : ValueListSeparatorBits;
 
 private:
     unsigned m_classType : ClassTypeBits; // ClassType
 };
 
-WILL_BE_EAGERLY_TRACED(CSSValue);
-
 template<typename CSSValueType, size_t inlineCapacity>
 inline bool compareCSSValueVector(const WillBeHeapVector<RefPtrWillBeMember<CSSValueType>, inlineCapacity>& firstVector, const WillBeHeapVector<RefPtrWillBeMember<CSSValueType>, inlineCapacity>& secondVector)
 {
     size_t size = firstVector.size();
     if (size != secondVector.size())
         return false;
 
     for (size_t i = 0; i < size; i++) {
         const RefPtrWillBeMember<CSSValueType>& firstPtr = firstVector[i];
         const RefPtrWillBeMember<CSSValueType>& secondPtr = secondVector[i];
@@ skipping 21 matching lines @@
 {
     return first ? second && first->equals(*second) : !second;
 }
 
 #define DEFINE_CSS_VALUE_TYPE_CASTS(thisType, predicate) \
     DEFINE_TYPE_CASTS(thisType, CSSValue, value, value->predicate, value.predicate)
 
 } // namespace blink
 
 #endif // CSSValue_h