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

third_party/WebKit/Source/core/animation/StringKeyframe.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "core/animation/StringKeyframe.h"
 
 #include "core/StylePropertyShorthand.h"
 #include "core/animation/css/CSSAnimations.h"
 #include "core/css/CSSPropertyMetadata.h"
 #include "core/css/resolver/StyleResolver.h"
@@ skipping 77 matching lines @@
 }
 
 bool StringKeyframe::CSSPropertySpecificKeyframe::populateAnimatableValue(CSSPropertyID property, Element& element, const ComputedStyle& baseStyle, const ComputedStyle* parentStyle) const
 {
     m_animatableValueCache = StyleResolver::createAnimatableValueSnapshot(element, baseStyle, parentStyle, property, m_value.get());
     return true;
 }
 
 PassRefPtr<Keyframe::PropertySpecificKeyframe> StringKeyframe::CSSPropertySpecificKeyframe::neutralKeyframe(double offset, PassRefPtr<TimingFunction> easing) const
 {
-    return create(offset, easing, nullptr, EffectModel::CompositeAdd);
+    return create(offset, std::move(easing), nullptr, EffectModel::CompositeAdd);
 }
 
 PassRefPtr<Keyframe::PropertySpecificKeyframe> StringKeyframe::CSSPropertySpecificKeyframe::cloneWithOffset(double offset) const
 {
     RefPtr<CSSPropertySpecificKeyframe> clone = create(offset, m_easing, m_value.get(), m_composite);
     clone->m_animatableValueCache = m_animatableValueCache;
     return clone.release();
 }
 
 PassRefPtr<Keyframe::PropertySpecificKeyframe> SVGPropertySpecificKeyframe::cloneWithOffset(double offset) const
 {
     return create(offset, m_easing, m_value, m_composite);
 }
 
 PassRefPtr<Keyframe::PropertySpecificKeyframe> SVGPropertySpecificKeyframe::neutralKeyframe(double offset, PassRefPtr<TimingFunction> easing) const
 {
-    return create(offset, easing, String(), EffectModel::CompositeAdd);
+    return create(offset, std::move(easing), String(), EffectModel::CompositeAdd);
 }
 
 } // namespace blink