Revert "Remove OwnPtr from Blink."

third_party/WebKit/Source/core/frame/SettingsDelegate.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 15 matching lines @@
  * 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 SettingsDelegate_h
 #define SettingsDelegate_h
 
 #include "core/CoreExport.h"
 #include "wtf/Allocator.h"
-#include <memory>
+#include "wtf/OwnPtr.h"
+#include "wtf/PassOwnPtr.h"
 
 namespace blink {
 
 class Settings;
 
 class CORE_EXPORT SettingsDelegate {
     DISALLOW_NEW();
 public:
-    explicit SettingsDelegate(std::unique_ptr<Settings>);
+    explicit SettingsDelegate(PassOwnPtr<Settings>);
     virtual ~SettingsDelegate();
 
     Settings* settings() const { return m_settings.get(); }
 
     // We currently use an enum instead of individual invalidation
     // functions to make generating Settings.in slightly easier.
     enum ChangeType {
         StyleChange,
         ViewportDescriptionChange,
         ViewportRuleChange,
         DNSPrefetchingChange,
         ImageLoadingChange,
         TextAutosizingChange,
         FontFamilyChange,
         AcceleratedCompositingChange,
         MediaQueryChange,
         AccessibilityStateChange,
         TextTrackKindUserPreferenceChange,
     };
 
     virtual void settingsChanged(ChangeType) = 0;
 
 protected:
-    std::unique_ptr<Settings> const m_settings;
+    OwnPtr<Settings> const m_settings;
 };
 
 } // namespace blink
 
 #endif // SettingsDelegate_h