Implement basic interface for MutationObserver and MutationRecord.

components/script/dom/mutationrecord.rs

@@ -0,0 +1,34 @@
+/* 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::MutationRecordBinding::MutationRecordBinding::MutationRecordMethods;
+use dom::bindings::js::{JS, Root};
+use dom::bindings::reflector::Reflector;
+use dom::bindings::str::DOMString;
+use dom::node::Node;
+use dom_struct::dom_struct;
+
+#[dom_struct]
+pub struct MutationRecord {
+    reflector_: Reflector,
+
+    //property for record type
+    record_type: DOMString,
+
+    //property for target node
+    target: JS<Node>,
+}
+
+impl MutationRecordMethods for MutationRecord {
+    // https://dom.spec.whatwg.org/#dom-mutationrecord-type
+    fn Type(&self) -> DOMString {
+        self.record_type.clone()
+    }
+
+    // https://dom.spec.whatwg.org/#dom-mutationrecord-target
+    fn Target(&self) -> Root<Node> {
+        return Root::from_ref(&*self.target);
+    }
+
+}