Add support for restricting the cipher suites that SSLClientSocket(Mac,NSS) use

net/socket/ssl_client_socket_nss.cc

Index: net/socket/ssl_client_socket_nss.cc
diff --git a/net/socket/ssl_client_socket_nss.cc b/net/socket/ssl_client_socket_nss.cc
index a6aa4588a3d2e10a821139500362ab8ccaa62125..4dcd355cfb738b72de9faf8c199260cf3bb41261 100644
--- a/net/socket/ssl_client_socket_nss.cc
+++ b/net/socket/ssl_client_socket_nss.cc
@@ -94,6 +94,7 @@
 #include "net/ocsp/nss_ocsp.h"
 #include "net/socket/client_socket_handle.h"
 #include "net/socket/dns_cert_provenance_check.h"
+#include "net/socket/ssl_error_params.h"
 #include "net/socket/ssl_host_info.h"
 
 static const int kRecvBufferSize = 4096;
@@ -272,28 +273,6 @@ int MapHandshakeError(PRErrorCode err) {
   }
 }
 
-// Extra parameters to attach to the NetLog when we receive an SSL error.
-class SSLErrorParams : public NetLog::EventParameters {
- public:
-  // If |ssl_lib_error| is 0, it will be ignored.
-  SSLErrorParams(int net_error, PRErrorCode ssl_lib_error)
-      : net_error_(net_error),
-        ssl_lib_error_(ssl_lib_error) {
-  }
-
-  virtual Value* ToValue() const {
-    DictionaryValue* dict = new DictionaryValue();
-    dict->SetInteger("net_error", net_error_);
-    if (ssl_lib_error_)
-      dict->SetInteger("ssl_lib_error", ssl_lib_error_);
-    return dict;
-  }
-
- private:
-  const int net_error_;
-  const PRErrorCode ssl_lib_error_;
-};
-
 // Extra parameters to attach to the NetLog when we receive an error in response
 // to a call to an NSS function.  Used instead of SSLErrorParams with
 // events of type TYPE_SSL_NSS_ERROR.  Automatically looks up last PR error.
@@ -729,6 +708,14 @@ int SSLClientSocketNSS::InitializeSSLOptions() {
     return ERR_UNEXPECTED;
   }
 
+  for (std::vector<uint16>::const_iterator it =
+           ssl_config_.disabled_cipher_suites.begin();
+       it != ssl_config_.disabled_cipher_suites.end(); ++it) {
+    // This will fail if the specified cipher is not implemented by NSS, but
+    // the failure is harmless.
+    SSL_CipherPrefSet(nss_fd_, *it, PR_FALSE);
+  }
+
 #ifdef SSL_ENABLE_SESSION_TICKETS
   // Support RFC 5077
   rv = SSL_OptionSet(nss_fd_, SSL_ENABLE_SESSION_TICKETS, PR_TRUE);