3 files changed, 14 insertions, 6 deletions
diff --git a/components/script/dom/htmlmediaelement.rs b/components/script/dom/htmlmediaelement.rs
index b38c0e9255f..6faa718a0a9 100644
--- a/components/script/dom/htmlmediaelement.rs
+++ b/components/script/dom/htmlmediaelement.rs
@@ -1657,6 +1657,17 @@ impl HTMLMediaElementMethods for HTMLMediaElement {
         TimeRanges::new(self.global().as_window(), self.played.clone())
     }
 
+    // https://html.spec.whatwg.org/multipage/#dom-media-buffered
+    fn Buffered(&self) -> DomRoot<TimeRanges> {
+        let mut buffered = TimeRangesContainer::new();
+        if let Ok(ranges) = self.player.buffered() {
+            for range in ranges {
+                let _ = buffered.add(range.start as f64, range.end as f64);
+            }
+        }
+        TimeRanges::new(self.global().as_window(), Rc::new(DomRefCell::new(buffered)))
+    }
+
     // https://html.spec.whatwg.org/multipage/#dom-media-texttracks
     fn TextTracks(&self) -> DomRoot<TextTrackList> {
         let window = window_from_node(self);
diff --git a/components/script/dom/timeranges.rs b/components/script/dom/timeranges.rs
index c82daac23a7..645de7b5799 100644
--- a/components/script/dom/timeranges.rs
+++ b/components/script/dom/timeranges.rs
@@ -14,7 +14,7 @@ use dom_struct::dom_struct;
 use std::fmt;
 use std::rc::Rc;
 
-#[derive(JSTraceable, MallocSizeOf)]
+#[derive(Clone, JSTraceable, MallocSizeOf)]
 struct TimeRange {
     start: f64,
     end: f64,
@@ -57,7 +57,7 @@ pub enum TimeRangesError {
     OutOfRange,
 }
 
-#[derive(Debug, JSTraceable, MallocSizeOf)]
+#[derive(Clone, Debug, JSTraceable, MallocSizeOf)]
 pub struct TimeRangesContainer {
     ranges: Vec<TimeRange>,
 }
@@ -132,9 +132,6 @@ pub struct TimeRanges {
     ranges: Rc<DomRefCell<TimeRangesContainer>>,
 }
 
-//XXX(ferjm) We'll get warnings about unused methods until we use this
-//           on the media element implementation.
-#[allow(dead_code)]
 impl TimeRanges {
     fn new_inherited(ranges: Rc<DomRefCell<TimeRangesContainer>>) -> TimeRanges {
         Self {
diff --git a/components/script/dom/webidls/HTMLMediaElement.webidl b/components/script/dom/webidls/HTMLMediaElement.webidl
index d083b80ffff..0acd2a2c9a6 100644
--- a/components/script/dom/webidls/HTMLMediaElement.webidl
+++ b/components/script/dom/webidls/HTMLMediaElement.webidl
@@ -23,7 +23,7 @@ interface HTMLMediaElement : HTMLElement {
   const unsigned short NETWORK_NO_SOURCE = 3;
   readonly attribute unsigned short networkState;
   [CEReactions] attribute DOMString preload;
-  // readonly attribute TimeRanges buffered;
+  readonly attribute TimeRanges buffered;
   void load();
   CanPlayTypeResult canPlayType(DOMString type);