Oilpan: move SVG property hierarchy to the heap.

Source/platform/animation/AnimationValue.h

Index: Source/platform/animation/AnimationValue.h
diff --git a/Source/platform/animation/AnimationValue.h b/Source/platform/animation/AnimationValue.h
index 5b96b19e6780a7dd45b287cdd0707c39a250d5a1..0bf60bc606916f79305a04bcbc8f35e3c1063a43 100644
--- a/Source/platform/animation/AnimationValue.h
+++ b/Source/platform/animation/AnimationValue.h
@@ -92,23 +92,6 @@ private:
     TransformOperations m_value;
 };
 
-// Used to store one filter value in a keyframe list.
-class FilterAnimationValue final : public AnimationValue {
-public:
-    explicit FilterAnimationValue(double keyTime, const FilterOperations* value = 0, PassRefPtr<TimingFunction> timingFunction = nullptr)
-        : AnimationValue(keyTime, timingFunction)
-    {
-        if (value)
-            m_value = *value;
-    }
-    virtual PassOwnPtr<AnimationValue> clone() const override { return adoptPtr(new FilterAnimationValue(*this)); }
-
-    const FilterOperations* value() const { return &m_value; }
-
-private:
-    FilterOperations m_value;
-};
-
 } // namespace blink
 
 #endif // AnimationValue_h