Fix crypto_unittests on Windows BoringSSL port.

crypto/ec_signature_creator_openssl.cc

Index: crypto/ec_signature_creator_openssl.cc
diff --git a/crypto/ec_signature_creator_openssl.cc b/crypto/ec_signature_creator_openssl.cc
index adff2c9d7dc73f975c396368303e5520457a0aa2..91e8a6a8d330512cb018b2de0c415999e4f15632 100644
--- a/crypto/ec_signature_creator_openssl.cc
+++ b/crypto/ec_signature_creator_openssl.cc
@@ -17,12 +17,6 @@
 
 namespace crypto {
 
-namespace {
-
-typedef ScopedOpenSSL<ECDSA_SIG, ECDSA_SIG_free>::Type ScopedECDSA_SIG;
-
-}  // namespace
-
 ECSignatureCreatorImpl::ECSignatureCreatorImpl(ECPrivateKey* key)
     : key_(key), signature_len_(0) {
   EnsureOpenSSLInit();