Oilpan: Move InterpolableValue's hierarchy to oilpan's heap

Source/core/animation/Interpolation.cpp

 // 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.
 
 #include "config.h"
 #include "core/animation/Interpolation.h"
 
 #include "core/css/resolver/AnimatedStyleBuilder.h"
 #include "core/css/resolver/StyleResolverState.h"
 
@@ skipping 17 matching lines @@
         return false;
     for (size_t i = 0; i < startList->length(); ++i) {
         if (!typesMatch(startList->get(i), endList->get(i)))
             return false;
     }
     return true;
 }
 
 }
 
-Interpolation::Interpolation(PassOwnPtr<InterpolableValue> start, PassOwnPtr<InterpolableValue> end)
+Interpolation::Interpolation(PassOwnPtrWillBeRawPtr<InterpolableValue> start, PassOwnPtrWillBeRawPtr<InterpolableValue> end)
     : m_start(start)
     , m_end(end)
     , m_cachedFraction(0)
     , m_cachedIteration(0)
     , m_cachedValue(m_start->clone())
 {
     RELEASE_ASSERT(typesMatch(m_start.get(), m_end.get()));
 }
 
 void Interpolation::interpolate(int iteration, double fraction) const
 {
     if (m_cachedFraction != fraction || m_cachedIteration != iteration) {
         m_cachedValue = m_start->interpolate(*m_end, fraction);
         m_cachedIteration = iteration;
         m_cachedFraction = fraction;
     }
 }
 
+void Interpolation::trace(Visitor* visitor)
+{
+    visitor->trace(m_start);
+    visitor->trace(m_end);
+    visitor->trace(m_cachedValue);
+}
+
 void StyleInterpolation::trace(Visitor* visitor)
 {
     Interpolation::trace(visitor);
 }
 
 void LegacyStyleInterpolation::apply(StyleResolverState& state) const
 {
     AnimatableValue* value = currentValue();
     AnimatedStyleBuilder::applyProperty(m_id, state, value);
 }
 
 void LegacyStyleInterpolation::trace(Visitor* visitor)
 {
     StyleInterpolation::trace(visitor);
 }
 
 }