Convert //ash from scoped_ptr to std::unique_ptr

ash/display/display_color_manager_chromeos.h

Index: ash/display/display_color_manager_chromeos.h
diff --git a/ash/display/display_color_manager_chromeos.h b/ash/display/display_color_manager_chromeos.h
index e37fe7062693c7511e8318385cd2f609b358e6c3..5db3b8b7405b80089e3d8f78734d9038596a41f6 100644
--- a/ash/display/display_color_manager_chromeos.h
+++ b/ash/display/display_color_manager_chromeos.h
@@ -61,9 +61,10 @@ class ASH_EXPORT DisplayColorManager
                                                ui::DisplayConnectionType type,
                                                const base::FilePath& path,
                                                bool file_downloaded);
-  virtual void UpdateCalibrationData(int64_t display_id,
-                                     int64_t product_id,
-                                     scoped_ptr<ColorCalibrationData> data);
+  virtual void UpdateCalibrationData(
+      int64_t display_id,
+      int64_t product_id,
+      std::unique_ptr<ColorCalibrationData> data);
 
  private:
   void ApplyDisplayColorCalibration(int64_t display_id, int64_t product_id);