Remove DOMRectList and use sequences instead.

DOMRectList was removed last back in 2015. See
https://www.w3.org/Bugs/Public/show_bug.cgi?id=26200 for details.

components/script/dom/domrectlist.rs

@@ -1,58 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-use dom::bindings::codegen::Bindings::DOMRectListBinding;
-use dom::bindings::codegen::Bindings::DOMRectListBinding::DOMRectListMethods;
-use dom::bindings::js::{JS, Root};
-use dom::bindings::reflector::{Reflector, reflect_dom_object};
-use dom::domrect::DOMRect;
-use dom::window::Window;
-use dom_struct::dom_struct;
-
-#[dom_struct]
-pub struct DOMRectList {
-    reflector_: Reflector,
-    rects: Vec<JS<DOMRect>>,
-}
-
-impl DOMRectList {
-    fn new_inherited<T>(rects: T) -> DOMRectList
-        where T: Iterator<Item = Root<DOMRect>>
-    {
-        DOMRectList {
-            reflector_: Reflector::new(),
-            rects: rects.map(|r| JS::from_ref(&*r)).collect(),
-        }
-    }
-
-    pub fn new<T>(window: &Window, rects: T) -> Root<DOMRectList>
-        where T: Iterator<Item = Root<DOMRect>>
-    {
-        reflect_dom_object(box DOMRectList::new_inherited(rects),
-                           window,
-                           DOMRectListBinding::Wrap)
-    }
-}
-
-impl DOMRectListMethods for DOMRectList {
-    // https://drafts.fxtf.org/geometry/#dom-domrectlist-length
-    fn Length(&self) -> u32 {
-        self.rects.len() as u32
-    }
-
-    // https://drafts.fxtf.org/geometry/#dom-domrectlist-item
-    fn Item(&self, index: u32) -> Option<Root<DOMRect>> {
-        let rects = &self.rects;
-        if index < rects.len() as u32 {
-            Some(Root::from_ref(&*rects[index as usize]))
-        } else {
-            None
-        }
-    }
-
-    // check-tidy: no specs after this line
-    fn IndexedGetter(&self, index: u32) -> Option<Root<DOMRect>> {
-        self.Item(index)
-    }
-}