Use new BoringSSL scopers in //crypto

crypto/ec_signature_creator_impl.cc

Index: crypto/ec_signature_creator_impl.cc
diff --git a/crypto/ec_signature_creator_impl.cc b/crypto/ec_signature_creator_impl.cc
index c22efdab4b476ce40ed19afff53c279b7e317d99..2870310dd1c0d30880412a0a05bd87ac978da063 100644
--- a/crypto/ec_signature_creator_impl.cc
+++ b/crypto/ec_signature_creator_impl.cc
@@ -15,7 +15,6 @@
 #include "base/logging.h"
 #include "crypto/ec_private_key.h"
 #include "crypto/openssl_util.h"
-#include "crypto/scoped_openssl_types.h"
 
 namespace crypto {
 
@@ -30,7 +29,7 @@ bool ECSignatureCreatorImpl::Sign(const uint8_t* data,
                                   int data_len,
                                   std::vector<uint8_t>* signature) {
   OpenSSLErrStackTracer err_tracer(FROM_HERE);
-  ScopedEVP_MD_CTX ctx(EVP_MD_CTX_create());
+  bssl::ScopedEVP_MD_CTX ctx;
   size_t sig_len = 0;
   if (!ctx.get() ||
       !EVP_DigestSignInit(ctx.get(), nullptr, EVP_sha256(), nullptr,
@@ -56,7 +55,7 @@ bool ECSignatureCreatorImpl::DecodeSignature(
     std::vector<uint8_t>* out_raw_sig) {
   OpenSSLErrStackTracer err_tracer(FROM_HERE);
   // Create ECDSA_SIG object from DER-encoded data.
-  ScopedECDSA_SIG ecdsa_sig(
+  bssl::UniquePtr<ECDSA_SIG> ecdsa_sig(
       ECDSA_SIG_from_bytes(der_sig.data(), der_sig.size()));
   if (!ecdsa_sig.get())
     return false;