MIME type predicates and case-insensitive matching.

Source/core/dom/ScriptLoader.cpp

Index: Source/core/dom/ScriptLoader.cpp
diff --git a/Source/core/dom/ScriptLoader.cpp b/Source/core/dom/ScriptLoader.cpp
index eaa0e45da91f557bb187e6c107c779a6dcb69ff7..04ef75c5c9e967e21c72208230628164595b3a7b 100644
--- a/Source/core/dom/ScriptLoader.cpp
+++ b/Source/core/dom/ScriptLoader.cpp
@@ -159,7 +159,7 @@ bool ScriptLoader::isScriptTypeSupported(LegacyTypeSupport supportLegacyTypes) c
         type = "text/" + language.lower();
         if (MIMETypeRegistry::isSupportedJavaScriptMIMEType(type) || isLegacySupportedJavaScriptLanguage(language))
             return true;
-    } else if (MIMETypeRegistry::isSupportedJavaScriptMIMEType(type.stripWhiteSpace().lower()) || (supportLegacyTypes == AllowLegacyTypeInTypeAttribute && isLegacySupportedJavaScriptLanguage(type))) {
+    } else if (MIMETypeRegistry::isSupportedJavaScriptMIMEType(type.stripWhiteSpace()) || (supportLegacyTypes == AllowLegacyTypeInTypeAttribute && isLegacySupportedJavaScriptLanguage(type))) {
         return true;
     }