Revert "Remove OwnPtr from Blink."

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

Index: third_party/WebKit/Source/core/animation/CSSVisibilityInterpolationType.cpp
diff --git a/third_party/WebKit/Source/core/animation/CSSVisibilityInterpolationType.cpp b/third_party/WebKit/Source/core/animation/CSSVisibilityInterpolationType.cpp
index 40fc30eaef371bf4f2709de35de96982cdb34368..f620da1c6375220ba4152abf0ad2498206663125 100644
--- a/third_party/WebKit/Source/core/animation/CSSVisibilityInterpolationType.cpp
+++ b/third_party/WebKit/Source/core/animation/CSSVisibilityInterpolationType.cpp
@@ -6,8 +6,6 @@
 
 #include "core/css/CSSPrimitiveValueMappings.h"
 #include "core/css/resolver/StyleResolverState.h"
-#include "wtf/PtrUtil.h"
-#include <memory>
 
 namespace blink {
 
@@ -58,9 +56,9 @@ class UnderlyingVisibilityChecker : public InterpolationType::ConversionChecker
 public:
     ~UnderlyingVisibilityChecker() final {}
 
-    static std::unique_ptr<UnderlyingVisibilityChecker> create(EVisibility visibility)
+    static PassOwnPtr<UnderlyingVisibilityChecker> create(EVisibility visibility)
     {
-        return wrapUnique(new UnderlyingVisibilityChecker(visibility));
+        return adoptPtr(new UnderlyingVisibilityChecker(visibility));
     }
 
 private:
@@ -80,9 +78,9 @@ private:
 
 class ParentVisibilityChecker : public InterpolationType::ConversionChecker {
 public:
-    static std::unique_ptr<ParentVisibilityChecker> create(EVisibility visibility)
+    static PassOwnPtr<ParentVisibilityChecker> create(EVisibility visibility)
     {
-        return wrapUnique(new ParentVisibilityChecker(visibility));
+        return adoptPtr(new ParentVisibilityChecker(visibility));
     }
 
 private: