Revert of Switch to BoringSSL.

net/quic/crypto/aead_base_encrypter_openssl.cc

Index: net/quic/crypto/aead_base_encrypter_openssl.cc
diff --git a/net/quic/crypto/aead_base_encrypter_openssl.cc b/net/quic/crypto/aead_base_encrypter_openssl.cc
index 7f2d3c6ca1d62b48241f942df361daf873ba259e..9f053abf93286df6b15a5ba72ddb3561cb7ee8a6 100644
--- a/net/quic/crypto/aead_base_encrypter_openssl.cc
+++ b/net/quic/crypto/aead_base_encrypter_openssl.cc
@@ -81,18 +81,14 @@
     return false;
   }
 
-  size_t len;
-  if (!EVP_AEAD_CTX_seal(
-          ctx_.get(),
-          output,
-          &len,
-          plaintext.size() + auth_tag_size_,
-          reinterpret_cast<const uint8_t*>(nonce.data()),
-          nonce.size(),
-          reinterpret_cast<const uint8_t*>(plaintext.data()),
-          plaintext.size(),
-          reinterpret_cast<const uint8_t*>(associated_data.data()),
-          associated_data.size())) {
+  ssize_t len = EVP_AEAD_CTX_seal(
+      ctx_.get(), output, plaintext.size() + auth_tag_size_,
+      reinterpret_cast<const uint8_t*>(nonce.data()), nonce.size(),
+      reinterpret_cast<const uint8_t*>(plaintext.data()), plaintext.size(),
+      reinterpret_cast<const uint8_t*>(associated_data.data()),
+      associated_data.size());
+
+  if (len < 0) {
     DLogOpenSslErrors();
     return false;
   }