Gbp-Pq: Topic prefs
Gbp-Pq: Name Set-DPI-to-system-settings.patch
// A value of 0 means use the system DPI. A positive value is used as the DPI.
// This sets the physical size of a device pixel and thus controls the
// interpretation of physical units such as "pt".
-pref("layout.css.dpi", -1);
+pref("layout.css.dpi", 0);
// Set the number of device pixels per CSS pixel. A value <= 0 means choose
// automatically based on user settings for the platform (e.g., "UI scale factor"