nss: support SECWouldBlock from ChannelID callback.

net/third_party/nss/ssl/sslimpl.h

 /*
  * This file is PRIVATE to SSL and should be the first thing included by
  * any SSL implementation file.
  *
  * ***** BEGIN LICENSE BLOCK *****
  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
  *
  * The contents of this file are subject to the Mozilla Public License Version
  * 1.1 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
@@ skipping 912 matching lines @@
 
     CERTCertificate *    clientCertificate;  /* used by client */
     SECKEYPrivateKey *   clientPrivateKey;   /* used by client */
     /* platformClientKey is present even when NSS_PLATFORM_CLIENT_AUTH is not
      * defined in order to allow cleaner conditional code.
      * At most one of clientPrivateKey and platformClientKey may be set. */
     PlatformKey          platformClientKey;  /* used by client */
     CERTCertificateList *clientCertChain;    /* used by client */
     PRBool               sendEmptyCert;      /* used by client */
 
+    SECKEYPrivateKey    *channelID;          /* used by client */
+    SECKEYPublicKey     *channelIDPub;       /* used by client */
+
     int                  policy;
                         /* This says what cipher suites we can do, and should 
                          * be either SSL_ALLOWED or SSL_RESTRICTED 
                          */
     PRArenaPool *        peerCertArena;  
                             /* These are used to keep track of the peer CA */
     void *               peerCertChain;     
                             /* chain while we are trying to validate it.   */
     CERTDistNames *      ca_list; 
                             /* used by server.  trusted CAs for this socket. */
@@ skipping 955 matching lines @@
 #elif defined(_WIN32_WCE)
 #define SSL_GETPID GetCurrentProcessId
 #elif defined(WIN32)
 extern int __cdecl _getpid(void);
 #define SSL_GETPID _getpid
 #else
 #define SSL_GETPID() 0
 #endif
 
 #endif /* __sslimpl_h_ */