Oilpan build fix for r174893 and r174900.

Source/core/animation/interpolation/DeferredLegacyStyleInterpolation.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef DeferredLegacyStyleInterpolation_h
 #define DeferredLegacyStyleInterpolation_h
 
 #include "core/animation/interpolation/StyleInterpolation.h"
 #include "core/css/CSSValue.h"
 
@@ skipping 26 matching lines @@
     static bool interpolationRequiresStyleResolve(const CSSBasicShape&);
 
 private:
     DeferredLegacyStyleInterpolation(PassRefPtrWillBeRawPtr<CSSValue> start, PassRefPtrWillBeRawPtr<CSSValue> end, CSSPropertyID id)
         : StyleInterpolation(InterpolableNumber::create(0), InterpolableNumber::create(1), id)
         , m_startCSSValue(start)
         , m_endCSSValue(end)
     {
     }
 
-    RefPtrWillBeRawPtr<CSSValue> m_startCSSValue;
-    RefPtrWillBeRawPtr<CSSValue> m_endCSSValue;
+    RefPtrWillBeMember<CSSValue> m_startCSSValue;
+    RefPtrWillBeMember<CSSValue> m_endCSSValue;
 };
 
 }
 
 #endif