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

cc/playback/float_clip_display_item.h

Index: cc/playback/float_clip_display_item.h
diff --git a/cc/playback/float_clip_display_item.h b/cc/playback/float_clip_display_item.h
index 41d9acebfa7232432f18e999e3ebfce17401490a..f4614010a130e98b307ec184846decc7818f00a3 100644
--- a/cc/playback/float_clip_display_item.h
+++ b/cc/playback/float_clip_display_item.h
@@ -7,9 +7,10 @@
 
 #include <stddef.h>
 
+#include <memory>
 #include <vector>
 
-#include "base/memory/scoped_ptr.h"
+#include "base/memory/ptr_util.h"
 #include "cc/base/cc_export.h"
 #include "cc/playback/display_item.h"
 #include "ui/gfx/geometry/rect_f.h"
@@ -50,8 +51,8 @@ class CC_EXPORT EndFloatClipDisplayItem : public DisplayItem {
   explicit EndFloatClipDisplayItem(const proto::DisplayItem& proto);
   ~EndFloatClipDisplayItem() override;
 
-  static scoped_ptr<EndFloatClipDisplayItem> Create() {
-    return make_scoped_ptr(new EndFloatClipDisplayItem());
+  static std::unique_ptr<EndFloatClipDisplayItem> Create() {
+    return base::WrapUnique(new EndFloatClipDisplayItem());
   }
 
   void ToProtobuf(proto::DisplayItem* proto,