Description:
imported/w3c/web-platform-tests/html/semantics/embedded-content/bfcache/embedded-mp4.html

This test has been a flaky crash since being added at 252960@main.

REPRODUCTION STEPS
I can reproduce this on 254018@main ToT.

Command: 
run-webkit-tests --debug -1 --exit-after-n-failures 1 --exit-after-n-crashes-or-timeouts 1 --iterations 50 -f --no-retry imported/w3c/web-platform-tests/html/semantics/embedded-content/bfcache/embedded-mp4.html

Result: 
Unexpected flakiness: crashes (1)
  imported/w3c/web-platform-tests/html/semantics/embedded-content/bfcache/embedded-mp4.html [ Crash Pass ]

History:
https://results.webkit.org/?suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Fhtml%2Fsemantics%2Fembedded-content%2Fbfcache%2Fembedded-mp4.html&platform=mac&style=debug&flavor=wk1&limit=50000

Crash Log:
No crash log found for DumpRenderTree:88816.

stdout:

stderr:
ASSERTION FAILED: !needsLayout()
page/FrameView.cpp(4560) : virtual void WebCore::FrameView::paintContents(WebCore::GraphicsContext &, const WebCore::IntRect &, WebCore::Widget::SecurityOriginPaintPolicy, WebCore::EventRegionContext *)
1   0x11df30da9 WTFCrash
2   0x12701f0fb WTFCrashWithInfo(int, char const*, char const*, int)
3   0x12b8352af WebCore::FrameView::paintContents(WebCore::GraphicsContext&, WebCore::IntRect const&, WebCore::Widget::SecurityOriginPaintPolicy, WebCore::EventRegionContext*)
4   0x1083bda1c -[WebFrame(WebInternal) _drawRect:contentsOnly:]
5   0x1083e19d3 -[WebHTMLView drawSingleRect:]
6   0x1083e2035 -[WebHTMLView drawRect:]
7   0x7ff80bec3280 _NSViewDrawRect
8   0x7ff80c5de3bd -[NSView _recursive:displayRectIgnoringOpacity:inContext:stopAtLayerBackedViews:]
9   0x1083d57c6 -[WebHTMLView(WebPrivate) _recursive:displayRectIgnoringOpacity:inContext:stopAtLayerBackedViews:]
10  0x7ff80c5de70b -[NSView _recursive:displayRectIgnoringOpacity:inContext:stopAtLayerBackedViews:]
11  0x7ff80c5de70b -[NSView _recursive:displayRectIgnoringOpacity:inContext:stopAtLayerBackedViews:]
12  0x7ff80c5de70b -[NSView _recursive:displayRectIgnoringOpacity:inContext:stopAtLayerBackedViews:]
13  0x7ff80c033195 -[NSView displayRectIgnoringOpacity:inContext:]
14  0x1296fce9c WebCore::Widget::paint(WebCore::GraphicsContext&, WebCore::IntRect const&, WebCore::Widget::SecurityOriginPaintPolicy, WebCore::EventRegionContext*)
15  0x12baf0cc3 WebCore::ScrollView::paint(WebCore::GraphicsContext&, WebCore::IntRect const&, WebCore::Widget::SecurityOriginPaintPolicy, WebCore::EventRegionContext*)
16  0x12c61c849 WebCore::RenderWidget::paintContents(WebCore::PaintInfo&, WebCore::LayoutPoint const&)
17  0x12c61d103 WebCore::RenderWidget::paint(WebCore::PaintInfo&, WebCore::LayoutPoint const&)
18  0x12c42e7fc WebCore::RenderEmbeddedObject::paint(WebCore::PaintInfo&, WebCore::LayoutPoint const&)
19  0x12c4acef6 WebCore::RenderLayer::paintForegroundForFragmentsWithPhase(WebCore::PaintPhase, WTF::Vector<WebCore::LayerFragment, 1ul, WTF::CrashOnOverflow, 16ul, WTF::FastMalloc> const&, WebCore::GraphicsContext&, WebCore::RenderLayer::LayerPaintingInfo const&, WTF::OptionSet<WebCore::PaintBehavior>, WebCore::RenderObject*)
20  0x12c4aac6d WebCore::RenderLayer::paintForegroundForFragments(WTF::Vector<WebCore::LayerFragment, 1ul, WTF::CrashOnOverflow, 16ul, WTF::FastMalloc> const&, WebCore::GraphicsContext&, WebCore::GraphicsContext&, WebCore::LayoutRect const&, bool, WebCore::RenderLayer::LayerPaintingInfo const&, WTF::OptionSet<WebCore::PaintBehavior>, WebCore::RenderObject*)
21  0x12c4a6f28 WebCore::RenderLayer::paintLayerContents(WebCore::GraphicsContext&, WebCore::RenderLayer::LayerPaintingInfo const&, WTF::OptionSet<WebCore::RenderLayer::PaintLayerFlag>)
22  0x12c4f1192 WebCore::RenderLayerBacking::paintIntoLayer(WebCore::GraphicsLayer const*, WebCore::GraphicsContext&, WebCore::IntRect const&, WTF::OptionSet<WebCore::PaintBehavior>, WebCore::EventRegionContext*)::$_11::operator()(WebCore::RenderLayer&, WTF::OptionSet<WebCore::RenderLayer::PaintLayerFlag>) const
23  0x12c4f0ab6 WebCore::RenderLayerBacking::paintIntoLayer(WebCore::GraphicsLayer const*, WebCore::GraphicsContext&, WebCore::IntRect const&, WTF::OptionSet<WebCore::PaintBehavior>, WebCore::EventRegionContext*)
24  0x12c4f1ef1 WebCore::RenderLayerBacking::paintContents(WebCore::GraphicsLayer const*, WebCore::GraphicsContext&, WebCore::FloatRect const&, unsigned int)
25  0x12bd1c120 WebCore::GraphicsLayer::paintGraphicsLayerContents(WebCore::GraphicsContext&, WebCore::FloatRect const&, unsigned int)
26  0x12be0272f WebCore::GraphicsLayerCA::platformCALayerPaintContents(WebCore::PlatformCALayer*, WebCore::GraphicsContext&, WebCore::FloatRect const&, unsigned int)
27  0x12931d860 WebCore::PlatformCALayer::drawLayerContents(WebCore::GraphicsContext&, WebCore::PlatformCALayer*, WTF::Vector<WebCore::FloatRect, 5ul, WTF::CrashOnOverflow, 16ul, WTF::FastMalloc>&, unsigned int)
28  0x1294287f6 -[WebLayer drawInContext:]
29  0x7ff8103f199d CABackingStoreUpdate_
30  0x7ff8104559fd invocation function for block in CA::Layer::display_()
31  0x7ff8103f09d1 -[CALayer _display]