NSS should support this once it is taught what the ciphers actually are. We can get this from ESR52 as a down payment towards a full NSS update in the near future. In particular, from security/nss/lib/ssl/sslproto.h,
#define TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256 0xC023
#define TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384 0xC024
#define TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256 0xC027
#define TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 0xC028
#define TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 0xC02B
#define TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384 0xC02C
#define TLS_ECDH_ECDSA_WITH_AES_128_GCM_SHA256 0xC02D
#define TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 0xC02F
#define TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 0xC030
#define TLS_ECDH_RSA_WITH_AES_128_GCM_SHA256 0xC031
NSS should support this once it is taught what the ciphers actually are. We can get this from ESR52 as a down payment towards a full NSS update in the near future. In particular, from
security/nss/lib/ssl/sslproto.h,