net: disable ECDSA ciphersuites on platforms where we can't support it.

net/socket/ssl_client_socket_nss.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef NET_SOCKET_SSL_CLIENT_SOCKET_NSS_H_
 #define NET_SOCKET_SSL_CLIENT_SOCKET_NSS_H_
 
 #include <certt.h>
 #include <keyt.h>
 #include <nspr.h>
@@ skipping 128 matching lines @@
   int DoVerifyCert(int result);
   int DoVerifyCertComplete(int result);
 
   void LogConnectionTypeMetrics() const;
 
   // The following methods are for debugging bug 65948. Will remove this code
   // after fixing bug 65948.
   void EnsureThreadIdAssigned() const;
   bool CalledOnValidThread() const;
 
+  void DisableECDSA();
+
   // The task runner used to perform NSS operations.
   scoped_refptr<base::SequencedTaskRunner> nss_task_runner_;
   scoped_ptr<ClientSocketHandle> transport_;
   HostPortPair host_and_port_;
   SSLConfig ssl_config_;
 
   scoped_refptr<Core> core_;
 
   CompletionCallback user_connect_callback_;
 
@@ skipping 32 matching lines @@
   // Added the following code Debugging in release mode.
   mutable base::Lock lock_;
   // This is mutable so that CalledOnValidThread can set it.
   // It's guarded by |lock_|.
   mutable base::PlatformThreadId valid_thread_id_;
 };
 
 }  // namespace net
 
 #endif  // NET_SOCKET_SSL_CLIENT_SOCKET_NSS_H_