[Oilpan] Migrate most classes under core/animations to Oilpan heap.

Source/core/animation/animatable/AnimatableTransform.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 15 matching lines @@
  * 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 "config.h"
 #include "core/animation/animatable/AnimatableTransform.h"
 
 namespace blink {
 
-PassRefPtrWillBeRawPtr<AnimatableTransform> AnimatableTransform::create(const TransformOperations& transform)
+AnimatableTransform* AnimatableTransform::create(const TransformOperations& transform)
 {
-    return adoptRefWillBeNoop(new AnimatableTransform(transform));
+    return new AnimatableTransform(transform);
 }
 
-PassRefPtrWillBeRawPtr<AnimatableValue> AnimatableTransform::interpolateTo(const AnimatableValue* value, double fraction) const
+AnimatableValue* AnimatableTransform::interpolateTo(const AnimatableValue* value, double fraction) const
 {
     const AnimatableTransform* transform = toAnimatableTransform(value);
     return AnimatableTransform::create(transform->m_transform.blend(m_transform, fraction));
 }
 
 bool AnimatableTransform::equalTo(const AnimatableValue* value) const
 {
     return m_transform == toAnimatableTransform(value)->m_transform;
 }
 
 } // namespace blink