Remove OwnPtr from Blink.

third_party/WebKit/Source/platform/exported/WebScrollbarThemeGeometryNative.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:
  *
  * 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 13 matching lines @@
  */
 
 #ifndef WebScrollbarThemeGeometryNative_h
 #define WebScrollbarThemeGeometryNative_h
 
 #include "platform/PlatformExport.h"
 #include "public/platform/WebRect.h"
 #include "public/platform/WebScrollbarThemeGeometry.h"
 #include "wtf/Allocator.h"
 #include "wtf/Noncopyable.h"
-#include "wtf/PassOwnPtr.h"
+#include <memory>
 
 namespace blink {
 
 class ScrollbarTheme;
 class WebScrollbar;
 
 class PLATFORM_EXPORT WebScrollbarThemeGeometryNative : public WebScrollbarThemeGeometry {
     USING_FAST_MALLOC(WebScrollbarThemeGeometryNative);
     WTF_MAKE_NONCOPYABLE(WebScrollbarThemeGeometryNative);
 public:
-    static PassOwnPtr<WebScrollbarThemeGeometryNative> create(ScrollbarTheme&);
+    static std::unique_ptr<WebScrollbarThemeGeometryNative> create(ScrollbarTheme&);
 
     bool hasButtons(WebScrollbar*) override;
     bool hasThumb(WebScrollbar*) override;
     WebRect trackRect(WebScrollbar*) override;
     WebRect thumbRect(WebScrollbar*) override;
     WebRect backButtonStartRect(WebScrollbar*) override;
     WebRect backButtonEndRect(WebScrollbar*) override;
     WebRect forwardButtonStartRect(WebScrollbar*) override;
     WebRect forwardButtonEndRect(WebScrollbar*) override;
 
 private:
     explicit WebScrollbarThemeGeometryNative(ScrollbarTheme&);
 
     // The theme is not owned by this class. It is assumed that the theme is a
     // static pointer and its lifetime is essentially infinite. Only thread-safe
     // functions on the theme can be called by this theme.
     ScrollbarTheme& m_theme;
 };
 
 } // namespace blink
 
 #endif