[GStreamer][Debug] 2 mediastream tests hitting asserts

[philn]

a7b5bc7

[GStreamer][Debug] 2 mediastream tests hitting asserts
https://bugs.webkit.org/show_bug.cgi?id=245047

Reviewed by Xabier Rodriguez-Calvar.

The GstStream is now stored as GRefPtr<T> in TrackPrivateBaseGStreamer, so that we're sure the
underlying pointer is never dangling. In the player, we're now a bit more cautious when querying the
tags from the video track as well.

* Source/WebCore/platform/graphics/gstreamer/AudioTrackPrivateGStreamer.cpp:
(WebCore::AudioTrackPrivateGStreamer::AudioTrackPrivateGStreamer):
(WebCore::AudioTrackPrivateGStreamer::updateConfigurationFromTags):
(WebCore::AudioTrackPrivateGStreamer::updateConfigurationFromCaps):
(WebCore::AudioTrackPrivateGStreamer::kind const):
(WebCore::AudioTrackPrivateGStreamer::disconnect):
* Source/WebCore/platform/graphics/gstreamer/InbandTextTrackPrivateGStreamer.cpp:
(WebCore::InbandTextTrackPrivateGStreamer::InbandTextTrackPrivateGStreamer):
* Source/WebCore/platform/graphics/gstreamer/MediaPlayerPrivateGStreamer.cpp:
(WebCore::MediaPlayerPrivateGStreamer::naturalSize const):
* Source/WebCore/platform/graphics/gstreamer/TrackPrivateBaseGStreamer.cpp:
(WebCore::TrackPrivateBaseGStreamer::TrackPrivateBaseGStreamer):
(WebCore::TrackPrivateBaseGStreamer::tagsChanged):
* Source/WebCore/platform/graphics/gstreamer/TrackPrivateBaseGStreamer.h:
(WebCore::TrackPrivateBaseGStreamer::stream const):
* Source/WebCore/platform/graphics/gstreamer/VideoTrackPrivateGStreamer.cpp:
(WebCore::VideoTrackPrivateGStreamer::VideoTrackPrivateGStreamer):
(WebCore::VideoTrackPrivateGStreamer::updateConfigurationFromTags):
(WebCore::VideoTrackPrivateGStreamer::updateConfigurationFromCaps):
(WebCore::VideoTrackPrivateGStreamer::kind const):
(WebCore::VideoTrackPrivateGStreamer::disconnect):

Canonical link: https://commits.webkit.org/254373@main

7c0e57c

Misc	iOS, tvOS & watchOS	macOS	Linux	Windows
✅ 🧪 style	✅ 🛠 ios	✅ 🛠 mac	✅ 🛠 wpe	🛠 🧪 win
✅ 🧪 bindings	✅ 🛠 ios-sim	✅ 🛠 mac-debug	✅ 🛠 gtk	✅ 🛠 wincairo
✅ 🧪 webkitperl	✅ 🧪 ios-wk2	✅ 🛠 mac-AS-debug	✅ 🧪 gtk-wk2
	✅ 🧪 api-ios	✅ 🧪 api-mac	✅ 🧪 api-gtk
	✅ 🛠 tv	✅ 🧪 mac-wk1
	✅ 🛠 tv-sim	✅ 🧪 mac-wk2
✅ 🛠 🧪 merge	✅ 🛠 watch	✅ 🧪 mac-AS-debug-wk2
	✅ 🛠 watch-sim	✅ 🧪 mac-wk2-stress

[webkit-early-warning-system]

EWS run on previous version of this PR (hash 96214da)

Misc	iOS, tvOS & watchOS	macOS	Linux	Windows
✅ 🧪 style	✅ 🛠 ios	⏳ 🛠 mac	✅ 🛠 wpe	⏳ 🛠 🧪 win
✅ 🧪 bindings	✅ 🛠 ios-sim	⏳ 🛠 mac-debug	✅ 🛠 gtk	⏳ 🛠 wincairo
✅ 🧪 webkitperl	🧪 ios-wk2	✅ 🛠 mac-AS-debug	🧪 gtk-wk2
	🧪 api-ios	⏳ 🧪 api-mac	🧪 api-gtk
	⏳ 🛠 tv	⏳ 🧪 mac-wk1
	⏳ 🛠 tv-sim	⏳ 🧪 mac-wk2
	✅ 🛠 watch	🧪 mac-AS-debug-wk2
	✅ 🛠 watch-sim	⏳ 🧪 mac-wk2-stress

[webkit-early-warning-system]

7c0e57c

Misc	iOS, tvOS & watchOS	macOS	Linux	Windows
✅ 🧪 style	✅ 🛠 ios	✅ 🛠 mac	✅ 🛠 wpe	🛠 🧪 win
✅ 🧪 bindings	✅ 🛠 ios-sim	✅ 🛠 mac-debug	✅ 🛠 gtk	✅ 🛠 wincairo
✅ 🧪 webkitperl	✅ 🧪 ios-wk2	✅ 🛠 mac-AS-debug	✅ 🧪 gtk-wk2
	✅ 🧪 api-ios	✅ 🧪 api-mac	✅ 🧪 api-gtk
	✅ 🛠 tv	✅ 🧪 mac-wk1
	✅ 🛠 tv-sim	✅ 🧪 mac-wk2
✅ 🛠 🧪 merge	✅ 🛠 watch	✅ 🧪 mac-AS-debug-wk2
	✅ 🛠 watch-sim	✅ 🧪 mac-wk2-stress

[webkit-commit-queue]

Committed 254373@main (a7b5bc7): https://commits.webkit.org/254373@main

Reviewed commits have been landed. Closing PR #4238 and removing active labels.