1 files changed, 4 insertions, 6 deletions
diff --git a/chromium/third_party/blink/renderer/core/html/track/html_track_element.cc b/chromium/third_party/blink/renderer/core/html/track/html_track_element.cc
index f43af152576..67d538e5186 100644
--- a/chromium/third_party/blink/renderer/core/html/track/html_track_element.cc
+++ b/chromium/third_party/blink/renderer/core/html/track/html_track_element.cc
@@ -73,8 +73,9 @@ Node::InsertionNotificationRequest HTMLTrackElement::InsertedInto(
 }
 
 void HTMLTrackElement::RemovedFrom(ContainerNode& insertion_point) {
-  if (!parentNode() && IsHTMLMediaElement(insertion_point))
-    ToHTMLMediaElement(insertion_point).DidRemoveTrackElement(this);
+  auto* html_media_element = DynamicTo<HTMLMediaElement>(insertion_point);
+  if (html_media_element && !parentNode())
+    html_media_element->DidRemoveTrackElement(this);
   HTMLElement::RemovedFrom(insertion_point);
 }
 
@@ -334,10 +335,7 @@ const AtomicString& HTMLTrackElement::MediaElementCrossOriginAttribute() const {
 }
 
 HTMLMediaElement* HTMLTrackElement::MediaElement() const {
-  Element* parent = parentElement();
-  if (IsHTMLMediaElement(parent))
-    return ToHTMLMediaElement(parent);
-  return nullptr;
+  return DynamicTo<HTMLMediaElement>(parentElement());
 }
 
 void HTMLTrackElement::Trace(Visitor* visitor) {