Delete unused AnimatableValue code

third_party/WebKit/Source/core/animation/animatable/AnimatableLengthPoint.cpp

Index: third_party/WebKit/Source/core/animation/animatable/AnimatableLengthPoint.cpp
diff --git a/third_party/WebKit/Source/core/animation/animatable/AnimatableLengthPoint.cpp b/third_party/WebKit/Source/core/animation/animatable/AnimatableLengthPoint.cpp
index 1274c07f405200bd77d7bab5a62a866b401c3275..dead6316c7f44bfff0f784c3f4e9c764cc59d51f 100644
--- a/third_party/WebKit/Source/core/animation/animatable/AnimatableLengthPoint.cpp
+++ b/third_party/WebKit/Source/core/animation/animatable/AnimatableLengthPoint.cpp
@@ -32,24 +32,10 @@
 
 namespace blink {
 
-bool AnimatableLengthPoint::usesDefaultInterpolationWith(
-    const AnimatableValue* value) const {
-  const AnimatableLengthPoint* other = toAnimatableLengthPoint(value);
-  return this->x()->isUnknown() || other->x()->isUnknown();
-}
-
-PassRefPtr<AnimatableValue> AnimatableLengthPoint::interpolateTo(
-    const AnimatableValue* value,
-    double fraction) const {
-  const AnimatableLengthPoint* lengthPoint = toAnimatableLengthPoint(value);
-  return AnimatableLengthPoint::create(
-      AnimatableValue::interpolate(this->x(), lengthPoint->x(), fraction),
-      AnimatableValue::interpolate(this->y(), lengthPoint->y(), fraction));
-}
-
 bool AnimatableLengthPoint::equalTo(const AnimatableValue* value) const {
   const AnimatableLengthPoint* lengthPoint = toAnimatableLengthPoint(value);
-  return x()->equals(lengthPoint->x()) && y()->equals(lengthPoint->y());
+  return m_x->equals(lengthPoint->m_x.get()) &&
+         m_y->equals(lengthPoint->m_y.get());
 }
 
 }  // namespace blink