[Skia] Add support for favicons on GTK

[TingPing]

e9c4929

[Skia] Add support for favicons on GTK
https://bugs.webkit.org/show_bug.cgi?id=270811

Reviewed by Carlos Garcia Campos.

* Source/WebCore/PlatformGTK.cmake:
* Source/WebCore/SourcesGTK.txt:
* Source/WebCore/platform/graphics/gtk/GdkSkiaUtilities.cpp: Added.
(WebCore::skiaImageToGdkTexture):
* Source/WebCore/platform/graphics/gtk/GdkSkiaUtilities.h: Added.
* Source/WebKit/UIProcess/API/glib/WebKitFaviconDatabase.cpp:
(webkitFaviconDatabaseGetFaviconInternal):
(webkit_favicon_database_get_favicon_finish):

Canonical link: https://commits.webkit.org/275982@main

bc9cc53

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

[GeorgesStavracas]

LGTM

[webkit-early-warning-system]

EWS run on previous version of this PR (hash 98ebd8e)

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

[carlosgcampos]

Excellent, thanks! I have only a few minor comments

[webkit-early-warning-system]

EWS run on previous version of this PR (hash d6df65a)

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

[webkit-early-warning-system]

EWS run on current version of this PR (hash bc9cc53)

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

[webkit-commit-queue]

Committed 275982@main (e9c4929): https://commits.webkit.org/275982@main

Reviewed commits have been landed. Closing PR #25735 and removing active labels.