SynchronousLoaderClient::platformBadResponseError() is implemented for USE(CFNETWORK) platforms only, but used by the not guarded SynchronousLoaderClient::willSendRequest() function. It causes build failure on !USE(CFNETWORK) platforms with enable NetworkProcess.
Created attachment 210124 [details] workaround It is only a quick workaround to make the build happy, needs more investigation.
*** This bug has been marked as a duplicate of bug 120532 ***