extern int (*wkGetHTTPPipeliningPriority)(NSURLRequest *);
extern void (*wkSetHTTPPipeliningMaximumPriority)(int maximumPriority);
extern void (*wkSetHTTPPipeliningPriority)(NSMutableURLRequest *, int priority);
+extern void (*wkSetHTTPPipeliningMinimumFastLanePriority)(int priority);
extern void (*wkSetCONNECTProxyForStream)(CFReadStreamRef, CFStringRef proxyHost, CFNumberRef proxyPort);
extern void (*wkSetCONNECTProxyAuthorizationForStream)(CFReadStreamRef, CFStringRef proxyAuthorizationString);
extern CFHTTPMessageRef (*wkCopyCONNECTProxyResponse)(CFReadStreamRef, CFURLRef responseURL);