Revert "Remove OwnPtr from Blink."

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

 // Copyright 2016 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/UnderlyingValueOwner.h"
 
-#include <memory>
-
 namespace blink {
 
 struct NullValueWrapper {
     NullValueWrapper() : value(nullptr) {}
     const InterpolationValue value;
 };
 
 const InterpolationValue& UnderlyingValueOwner::value() const
 {
     DEFINE_STATIC_LOCAL(NullValueWrapper, nullValueWrapper, ());
@@ skipping 18 matching lines @@
 }
 
 void UnderlyingValueOwner::set(const InterpolationType& type, InterpolationValue&& value)
 {
     ASSERT(value);
     m_type = &type;
     m_valueOwner = std::move(value);
     m_value = &m_valueOwner;
 }
 
-void UnderlyingValueOwner::set(std::unique_ptr<TypedInterpolationValue> value)
+void UnderlyingValueOwner::set(PassOwnPtr<TypedInterpolationValue> value)
 {
     if (value)
         set(value->type(), std::move(value->mutableValue()));
     else
         set(nullptr);
 }
 
 void UnderlyingValueOwner::set(const TypedInterpolationValue* value)
 {
     if (value)
         set(value->type(), value->value());
     else
         set(nullptr);
 }
 
 InterpolationValue& UnderlyingValueOwner::mutableValue()
 {
     ASSERT(m_type && m_value);
     if (!m_valueOwner) {
         m_valueOwner = m_value->clone();
         m_value = &m_valueOwner;
     }
     return m_valueOwner;
 }
 
 } // namespace blink