Implement left property animation on InvalidatableStyleInterpolation

Source/core/animation/CSSValueInterpolationType.h

Index: Source/core/animation/CSSValueInterpolationType.h
diff --git a/Source/core/animation/CSSValueInterpolationType.h b/Source/core/animation/CSSValueInterpolationType.h
index 77e6edf1a7775d6a81a662c784065b3de15c4d3e..5662efef47bd290210de1b689ca2abf57aee6afc 100644
--- a/Source/core/animation/CSSValueInterpolationType.h
+++ b/Source/core/animation/CSSValueInterpolationType.h
@@ -17,7 +17,18 @@ public:
         : InterpolationType(property)
     { }
 
+    virtual PassOwnPtrWillBeRawPtr<PairwisePrimitiveInterpolation> maybeConvertPairwise(const CSSPropertySpecificKeyframe& startKeyframe, const CSSPropertySpecificKeyframe& endKeyframe, const StyleResolverState* state, ConversionCheckers&) const
+    {
+        return nullptr;
+    }
+
     virtual PassOwnPtrWillBeRawPtr<InterpolationValue> maybeConvertSingle(const CSSPropertySpecificKeyframe&, const StyleResolverState*, ConversionCheckers&) const override final;
+
+    virtual PassOwnPtrWillBeRawPtr<InterpolationValue> maybeConvertUnderlyingValue(const StyleResolverState&) const override final
+    {
+        return nullptr;
+    }
+
     virtual void apply(const InterpolableValue&, const NonInterpolableValue*, StyleResolverState&) const override final;
 };