Revert "Remove OwnPtr from Blink."

third_party/WebKit/Source/web/ContextFeaturesClientImpl.h

 /*
  * Copyright (C) 2012 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 14 matching lines @@
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * 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.
  */
 
 #ifndef ContextFeaturesClientImpl_h
 #define ContextFeaturesClientImpl_h
 
 #include "core/dom/ContextFeatures.h"
-#include "wtf/PtrUtil.h"
-#include <memory>
 
 namespace blink {
 
 class ContextFeaturesClientImpl final : public ContextFeaturesClient {
 public:
-    static std::unique_ptr<ContextFeaturesClientImpl> create()
+    static PassOwnPtr<ContextFeaturesClientImpl> create()
     {
-        return wrapUnique(new ContextFeaturesClientImpl());
+        return adoptPtr(new ContextFeaturesClientImpl());
     }
 
     bool isEnabled(Document*, ContextFeatures::FeatureType, bool defaultValue) override;
     void urlDidChange(Document*) override;
 
 private:
     ContextFeaturesClientImpl() { }
 
     bool askIfIsEnabled(Document*, ContextFeatures::FeatureType, bool defaultValue);
 };
 
 } // namespace blink
 
 #endif // ContextFeaturesClientImpl_h