Replaced PassRefPtr copies with moves in Source/core/animation.

third_party/WebKit/Source/core/animation/animatable/AnimatableLengthBoxAndBool.h

 /*
  * 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 22 matching lines @@
 
 #include "core/animation/animatable/AnimatableValue.h"
 
 namespace blink {
 
 class AnimatableLengthBoxAndBool final : public AnimatableValue {
 public:
     ~AnimatableLengthBoxAndBool() override { }
     static PassRefPtr<AnimatableLengthBoxAndBool> create(PassRefPtr<AnimatableValue> box, bool flag)
     {
-        return adoptRef(new AnimatableLengthBoxAndBool(box, flag));
+        return adoptRef(new AnimatableLengthBoxAndBool(std::move(box), flag));
     }
     const AnimatableValue* box() const { return m_box.get(); }
     bool flag() const { return m_flag; }
 
 protected:
     PassRefPtr<AnimatableValue> interpolateTo(const AnimatableValue*, double fraction) const override;
     bool usesDefaultInterpolationWith(const AnimatableValue*) const override;
 
 private:
     AnimatableLengthBoxAndBool(PassRefPtr<AnimatableValue> box, bool flag)
         : m_box(box)
         , m_flag(flag)
     {
     }
     AnimatableType type() const override { return TypeLengthBoxAndBool; }
     bool equalTo(const AnimatableValue*) const override;
 
     RefPtr<AnimatableValue> m_box;
     bool m_flag;
 };
 
 DEFINE_ANIMATABLE_VALUE_TYPE_CASTS(AnimatableLengthBoxAndBool, isLengthBoxAndBool());
 
 } // namespace blink
 
 #endif // AnimatableLengthBoxAndBool_h