Revert "Remove OwnPtr from Blink."

third_party/WebKit/Source/platform/graphics/paint/SkPictureBuilder.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef SkPictureBuilder_h
 #define SkPictureBuilder_h
 
 #include "platform/PlatformExport.h"
 #include "platform/geometry/FloatRect.h"
 #include "platform/graphics/paint/DisplayItemClient.h"
 #include "wtf/Noncopyable.h"
+#include "wtf/OwnPtr.h"
 #include "wtf/PassRefPtr.h"
-#include <memory>
 
 class SkMetaData;
 class SkPicture;
 
 namespace blink {
 
 class GraphicsContext;
 class PaintController;
 
 // When slimming paint ships we can remove this SkPicture abstraction and
@@ skipping 14 matching lines @@
     // construction.
     PassRefPtr<SkPicture> endRecording();
 
     // DisplayItemClient methods
     String debugName() const final { return "SkPictureBuilder"; }
     LayoutRect visualRect() const final { return LayoutRect(); }
 
 private:
     DISPLAY_ITEM_CACHE_STATUS_UNCACHEABLE_IMPLEMENTATION
 
-    std::unique_ptr<PaintController> m_paintController;
-    std::unique_ptr<GraphicsContext> m_context;
+    OwnPtr<PaintController> m_paintController;
+    OwnPtr<GraphicsContext> m_context;
     FloatRect m_bounds;
 };
 
 } // namespace blink
 
 #endif // SkPictureBuilder_h