Empty and deprecate experimental.Fullscreen.

Its extensions are already provided by default in Element and
Document.

Author: sjrd

src/main/scala/org/scalajs/dom/experimental/Fullscreen.scala

@@ -1,84 +1,6 @@
 package org.scalajs.dom.experimental
 
-import org.scalajs.dom.{Event, Element, Document}
-
-import scala.language.implicitConversions
-import scala.scalajs.js
-
-/**
- * Full Screen API
- *
- * [[https://fullscreen.spec.whatwg.org/ Fullscreen API Living Standard]]
- */
-object Fullscreen {
-
-  implicit def toFullscreenElement(e: Element): FullscreenElement =
-    e.asInstanceOf[FullscreenElement]
-
-  implicit def toFullscreenDocument(d: Document): FullscreenDocument =
-    d.asInstanceOf[FullscreenDocument]
-
-  @js.native
-  trait FullscreenElement extends js.Object {
-
-    /**
-     * The Element.requestFullscreen() method issues an asynchronous request to
-     * make the element be displayed full-screen.
-     *
-     * It's not guaranteed that the element will be put into full screen mode.
-     * If permission to enter full screen mode is granted, the document will
-     * receive a `fullscreenchange` event to let it know that it's now in full
-     * screen mode. If permission is denied, the document receives a
-     * `fullscreenerror` event instead.
-     *
-     * Note: Returns `js.UndefOr` because implementations of older versions
-     * of this spec may not return a Promise.
-     *
-     * MDN
-     */
-    def requestFullscreen(): js.UndefOr[js.Promise[Unit]] = js.native
-  }
-
-  @js.native
-  trait FullscreenDocument extends js.Object {
-
-    /**
-     * The fullscreenEnabled attribute tells you whether or not the document is
-     * currently in a state that would allow fullscreen mode to be requested.
-     *
-     * MDN
-     */
-    def fullscreenEnabled: Boolean = js.native
-
-    /**
-     * Returns the Element that is currently being presented in full-screen mode
-     * in this document, or `null` if full-screen mode is not currently in use.
-     *
-     * MDN
-     */
-    def fullscreenElement: Element = js.native
-
-    /**
-     * Stops document's fullscreen element from being displayed fullscreen and
-     * fulfills promise when done.
-     *
-     * Note: Returns `js.UndefOr` because implementations of older versions
-     * of this spec may not return a Promise.
-     *
-     * MDN
-     */
-    def exitFullscreen(): js.UndefOr[js.Promise[Unit]] = js.native
-
-    /**
-     * Note: May not be available in implementations of older versions of
-     * this spec.
-     **/
-    var onfullscreenchange: js.Function1[Event, _] = js.native
-
-    /**
-     * Note: May not be available in implementations of older versions of
-     * this spec.
-     **/
-    var onfullscreenerror: js.Function1[Event, _] = js.native
-  }
-}
+@deprecated(
+    "the extensions provided by Fullscreen are now available by default",
+    "2.0.0")
+object Fullscreen