[GStreamer] Two new failures media/media-can-play-case-sensitive-flac…

….html, media/media-can-play-type-case-sensitive.html

https://bugs.webkit.org/show_bug.cgi?id=260625

Reviewed by Xabier Rodriguez-Calvar.

Codec string matching is now case-sensitive in the registry scanner.

* LayoutTests/platform/glib/TestExpectations:
* Source/WebCore/platform/graphics/gstreamer/GStreamerRegistryScanner.cpp:
(WebCore::GStreamerRegistryScanner::initializeDecoders):
(WebCore::GStreamerRegistryScanner::isContentTypeSupported const):

Canonical link: https://commits.webkit.org/267343@main

LayoutTests/platform/glib/TestExpectations

@@ -3467,9 +3467,6 @@ imported/w3c/web-platform-tests/html/canvas/offscreen/text/fontVariantCaps-1.htm
 imported/w3c/web-platform-tests/html/canvas/offscreen/text/fontVariantCaps-3.html [ ImageOnlyFailure ]
 imported/w3c/web-platform-tests/html/canvas/offscreen/text/fontVariantCaps-4.html [ ImageOnlyFailure ]
 
-webkit.org/b/260625 media/media-can-play-case-sensitive-flac.html [ Failure ]
-webkit.org/b/260625 media/media-can-play-type-case-sensitive.html [ Failure ]
-
 # End: Common failures between GTK and WPE.
 
 #////////////////////////////////////////////////////////////////////////////////////////

Source/WebCore/platform/graphics/gstreamer/GStreamerRegistryScanner.cpp

@@ -493,7 +493,7 @@ void GStreamerRegistryScanner::initializeDecoders(const GStreamerRegistryScanner
     Vector<GstCapsWebKitMapping> mseCompatibleMapping = {
         { ElementFactories::Type::AudioDecoder, "audio/x-ac3", { }, { "x-ac3"_s, "ac-3"_s, "ac3"_s } },
         { ElementFactories::Type::AudioDecoder, "audio/x-eac3", { "audio/x-ac3"_s },  { "x-eac3"_s, "ec3"_s, "ec-3"_s, "eac3"_s } },
-        { ElementFactories::Type::AudioDecoder, "audio/x-flac", { "audio/x-flac"_s, "audio/flac"_s }, {"x-flac"_s, "flac"_s } },
+        { ElementFactories::Type::AudioDecoder, "audio/x-flac", { "audio/x-flac"_s, "audio/flac"_s }, {"x-flac"_s, "flac"_s, "fLaC"_s } },
     };
     fillMimeTypeSetFromCapsMapping(factories, mseCompatibleMapping);
 
@@ -803,8 +803,7 @@ MediaPlayerEnums::SupportsType GStreamerRegistryScanner::isContentTypeSupported(
     if (codecs.isEmpty())
         return SupportsType::MayBeSupported;
 
-    for (const auto& item : codecs) {
-        auto codec = item.convertToASCIILowercase();
+    for (const auto& codec : codecs) {
         bool requiresHardwareSupport = contentTypesRequiringHardwareSupport
             .findIf([containerType, codec](auto& hardwareContentType) -> bool {
             auto hardwareContainer = hardwareContentType.containerType();