Separate the DOM and layout into separate crates.

src/components/script/dom/clientrectlist.rs

@@ -0,0 +1,39 @@
+/* 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::clientrect::ClientRect;
+use dom::bindings::utils::WrapperCache;
+
+pub struct ClientRectList {
+    wrapper: WrapperCache,
+    rects: ~[@mut ClientRect]
+}
+
+pub impl ClientRectList {
+    fn new(rects: ~[@mut ClientRect]) -> @mut ClientRectList {
+        let list = @mut ClientRectList {
+            wrapper: WrapperCache::new(),
+            rects: rects
+        };
+        list.init_wrapper();
+        list
+    }
+
+    fn Length(&self) -> u32 {
+        self.rects.len() as u32
+    }
+
+    fn Item(&self, index: u32) -> Option<@mut ClientRect> {
+        if index < self.rects.len() as u32 {
+            Some(self.rects[index])
+        } else {
+            None
+        }
+    }
+
+    fn IndexedGetter(&self, index: u32, found: &mut bool) -> Option<@mut ClientRect> {
+        *found = index < self.rects.len() as u32;
+        self.Item(index)
+    }
+}