PixelPaint: Port to Core::Stream :^)

Author: https://github.com/krkk
Commit: 301f9de915
Pull-request: https://github.com/SerenityOS/serenity/pull/16548
Reviewed-by: https://github.com/AtkinsSJ ✅
Reviewed-by: https://github.com/LucasChollet

Userland/Applications/PixelPaint/ImageEditor.h

@@ -151,7 +151,7 @@ private:
     GUI::MouseEvent event_adjusted_for_layer(GUI::MouseEvent const&, Layer const&) const;
     GUI::MouseEvent event_with_pan_and_scale_applied(GUI::MouseEvent const&) const;
 
-    ErrorOr<void> save_project_to_file(Core::File&) const;
+    ErrorOr<void> save_project_to_file(NonnullOwnPtr<Core::Stream::File>) const;
 
     int calculate_ruler_step_size() const;
     Gfx::IntRect mouse_indicator_rect_x() const;