Keep auxilliary media objects on the heap always.

Source/core/paint/MediaControlsPainter.cpp

Index: Source/core/paint/MediaControlsPainter.cpp
diff --git a/Source/core/paint/MediaControlsPainter.cpp b/Source/core/paint/MediaControlsPainter.cpp
index 673c6ec2fbc801a95238eea12be7b61271b1728c..02028e943509a91e4326baa81857a7c513c116fd 100644
--- a/Source/core/paint/MediaControlsPainter.cpp
+++ b/Source/core/paint/MediaControlsPainter.cpp
@@ -298,7 +298,7 @@ void MediaControlsPainter::paintMediaSliderInternal(LayoutObject* object, const
 
     // Draw the buffered range. Since the element may have multiple buffered ranges and it'd be
     // distracting/'busy' to show all of them, show only the buffered range containing the current play head.
-    RefPtrWillBeRawPtr<TimeRanges> bufferedTimeRanges = mediaElement->buffered();
+    TimeRanges* bufferedTimeRanges = mediaElement->buffered();
     float duration = mediaElement->duration();
     float currentTime = mediaElement->currentTime();
     if (std::isnan(duration) || std::isinf(duration) || !duration || std::isnan(currentTime))