Auto merge of #18367 - aethanyc:media-change-xbl-stylset, r=emilio

style: Expose stylist::set_device() for gecko

This was reviewed in bug https://bugzilla.mozilla.org/show_bug.cgi?id=1382078

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components/style/gecko/generated/bindings.rs

@@ -1982,6 +1982,11 @@ extern "C" {
                                                 viewport_units_used:
                                                     *mut bool) -> u8;
 }
+extern "C" {
+    pub fn Servo_StyleSet_SetDevice(set: RawServoStyleSetBorrowed,
+                                    pres_context: RawGeckoPresContextOwned)
+     -> u8;
+}
 extern "C" {
     pub fn Servo_StyleSet_CompatModeChanged(raw_data:
                                                 RawServoStyleSetBorrowed);