Currently, there are two different implementations of `getDefaultCairoFontOptions()` on WPE and GTK. WPE version simply returns a static value created by `cairo_font_options_create()`, whereas GTK one is creating a singleton class that stores and updates an instance variable to keep it in sync with `GtkSettings`.
Pull request: https://github.com/WebKit/WebKit/pull/9929
Committed 260301@main (9ccc5caacd23): <https://commits.webkit.org/260301@main> Reviewed commits have been landed. Closing PR #9929 and removing active labels.