Remove OwnPtr from Blink.

third_party/WebKit/Source/web/ColorChooserUIController.h

 /*
  * Copyright (C) 2011 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:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 12 matching lines @@
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef ColorChooserUIController_h
 #define ColorChooserUIController_h
 
 #include "core/html/forms/ColorChooser.h"
 #include "platform/heap/Handle.h"
 #include "platform/text/PlatformLocale.h"
 #include "public/web/WebColorChooserClient.h"
-#include "wtf/OwnPtr.h"
+#include <memory>
 
 namespace blink {
 
 class ColorChooserClient;
 class LocalFrame;
 class WebColorChooser;
 
 class ColorChooserUIController : public GarbageCollectedFinalized<ColorChooserUIController>, public WebColorChooserClient, public ColorChooser {
     USING_GARBAGE_COLLECTED_MIXIN(ColorChooserUIController);
 public:
@@ skipping 13 matching lines @@
     AXObject* rootAXObject() override;
 
     // WebColorChooserClient functions:
     void didChooseColor(const WebColor&) final;
     void didEndChooser() final;
 
 protected:
     ColorChooserUIController(LocalFrame*, ColorChooserClient*);
 
     void openColorChooser();
-    OwnPtr<WebColorChooser> m_chooser;
+    std::unique_ptr<WebColorChooser> m_chooser;
     Member<ColorChooserClient> m_client;
 
     Member<LocalFrame> m_frame;
 };
 
 } // namespace blink
 
 #endif // ColorChooserUIController_h