Convert //cc from scoped_ptr to std::unique_ptr.

cc/playback/clip_display_item.h

 // Copyright 2014 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 CC_PLAYBACK_CLIP_DISPLAY_ITEM_H_
 #define CC_PLAYBACK_CLIP_DISPLAY_ITEM_H_
 
 #include <stddef.h>
 
+#include <memory>
 #include <vector>
 
-#include "base/memory/scoped_ptr.h"
 #include "cc/base/cc_export.h"
 #include "cc/playback/display_item.h"
 #include "third_party/skia/include/core/SkRRect.h"
 #include "ui/gfx/geometry/rect.h"
 
 class SkCanvas;
 
 namespace cc {
 class ImageSerializationProcessor;
 
@@ skipping 41 matching lines @@
                    base::trace_event::TracedValue* array) const override;
   size_t ExternalMemoryUsage() const override;
 
   int ApproximateOpCount() const { return 0; }
   bool IsSuitableForGpuRasterization() const { return true; }
 };
 
 }  // namespace cc
 
 #endif  // CC_PLAYBACK_CLIP_DISPLAY_ITEM_H_