Add support for fullscreen #10102

components/compositing/windowing.rs

@@ -119,6 +119,8 @@ pub trait WindowMethods {
     fn set_inner_size(&self, size: Size2D<u32>);
     /// Set the window position
     fn set_position(&self, point: Point2D<i32>);
+    /// Set fullscreen state
+    fn set_fullscreen_state(&self, state: bool);
 
     /// Sets the page title for the current page.
     fn set_page_title(&self, title: Option<String>);