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

cc/playback/transform_display_item.h

Index: cc/playback/transform_display_item.h
diff --git a/cc/playback/transform_display_item.h b/cc/playback/transform_display_item.h
index 7c1d934f550c5379599a82fadd6739ae77d8b46b..5065ea94d9a00f4a271f3e8c680155af434c5b1d 100644
--- a/cc/playback/transform_display_item.h
+++ b/cc/playback/transform_display_item.h
@@ -7,7 +7,9 @@
 
 #include <stddef.h>
 
-#include "base/memory/scoped_ptr.h"
+#include <memory>
+
+#include "base/memory/ptr_util.h"
 #include "cc/base/cc_export.h"
 #include "cc/playback/display_item.h"
 #include "ui/gfx/transform.h"
@@ -48,8 +50,8 @@ class CC_EXPORT EndTransformDisplayItem : public DisplayItem {
   explicit EndTransformDisplayItem(const proto::DisplayItem& proto);
   ~EndTransformDisplayItem() override;
 
-  static scoped_ptr<EndTransformDisplayItem> Create() {
-    return make_scoped_ptr(new EndTransformDisplayItem());
+  static std::unique_ptr<EndTransformDisplayItem> Create() {
+    return base::WrapUnique(new EndTransformDisplayItem());
   }
 
   void ToProtobuf(proto::DisplayItem* proto,