isSupportedEncryptedMediaMIMEType   53 Source/modules/encryptedmedia/MediaKeys.cpp     return MIMETypeRegistry::isSupportedEncryptedMediaMIMEType(keySystem, type.type(), codecs);
isSupportedEncryptedMediaMIMEType   67 Source/platform/MIMETypeRegistry.h     static bool isSupportedEncryptedMediaMIMEType(const String& keySystem, const String& mimeType, const String& codecs);