[Cocoa] Support AVIF images for macOS Ventura and iOS 16

[shallawa]

59d774a

[Cocoa] Support AVIF images for macOS Ventura and iOS 16
https://bugs.webkit.org/show_bug.cgi?id=241904
rdar://95742091

Reviewed by Myles C. Maxfield.

Add the mime type and the UTI of the AVIF to the list of the allowed image
formats. The system frameworks will be used to render the AVIF images on macOS
Ventura and iOS 16. Because of sand-boxing limitations, software decoding has
to be used for AVIF images.

* LayoutTests/platform/mac/TestExpectations:
* Source/WTF/wtf/PlatformHave.h:
* Source/WebCore/loader/cache/CachedResourceRequest.cpp:
(WebCore::acceptHeaderValueForImageResource):
* Source/WebCore/platform/MIMETypeRegistry.cpp:
* Source/WebCore/platform/graphics/cg/ImageDecoderCG.cpp:
(WebCore::createImageSourceOptions):
* Source/WebCore/platform/graphics/cg/UTIRegistry.cpp:
(WebCore::defaultSupportedImageTypes):

Canonical link: https://commits.webkit.org/251850@main

[litherum]

uh oh. Why is there both HAVE(AVIF) and USE(AVIF)? Can we consolidate them?

[shallawa]

HAVE(AVIF) is used by Apple ports where the system frameworks provide the needed support to render these images.
USE(AVIF) is used by non Apple ports. It is defined in Source/cmake/OptionsWPE.cmake and Source/cmake/OptionsGTK.cmake. They use libavif to handle the AVIF images. If we want to merge HAVE(AVIF) and USE(AVIF) and merge HAVE(WEBP) and USE(WEBP), I think it is better to handle this in a separate patch.

[litherum]

Can we make sure we have a bug open for the separate patch? (Presumably the separate patch would be for both AVIF and WEBP.)

[shallawa]

https://bugs.webkit.org/show_bug.cgi?id=241997

[litherum]

Still not super clear if this line has any repercussions beyond HEIC or AVIF, but okay.

[webkit-commit-queue]

Committed 251850@main (59d774a): https://commits.webkit.org/251850@main

Reviewed commits have been landed. Closing PR #1717 and removing active labels.