Delete unused AnimatableValue code

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

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 14 matching lines @@
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "core/animation/animatable/AnimatableLengthPoint.h"
 
 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