Update from https://crrev.com/312398

net/socket/ssl_client_socket_openssl.cc

 // 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.
 
 // OpenSSL binding for SSLClientSocket. The class layout and general principle
 // of operation is derived from SSLClientSocketNSS.
 
 #include "net/socket/ssl_client_socket_openssl.h"
 
 #include <errno.h>
 #include <openssl/bio.h>
 #include <openssl/err.h>
 #include <openssl/ssl.h>
+#include <string.h>
 
 #include "base/bind.h"
 #include "base/callback_helpers.h"
 #include "base/environment.h"
 #include "base/memory/singleton.h"
 #include "base/metrics/histogram.h"
 #include "base/profiler/scoped_tracker.h"
 #include "base/strings/string_piece.h"
 #include "base/synchronization/lock.h"
 #include "base/threading/thread_local.h"
@@ skipping 1869 matching lines @@
         npn_status_ = kNextProtoNegotiated;
         break;
       }
     }
     if (npn_status_ == kNextProtoNegotiated)
       break;
   }
 
   // If we didn't find a protocol, we select the first one from our list.
   if (npn_status_ == kNextProtoNoOverlap) {
-    const std::string proto = NextProtoToString(ssl_config_.next_protos[0]);
-    *out = reinterpret_cast<uint8*>(const_cast<char*>(proto.data()));
-    *outlen = proto.size();
+    // NextProtoToString returns a pointer to a static string.
+    const char* proto = NextProtoToString(ssl_config_.next_protos[0]);
+    *out = reinterpret_cast<unsigned char*>(const_cast<char*>(proto));
+    *outlen = strlen(proto);
   }
 
   npn_proto_.assign(reinterpret_cast<const char*>(*out), *outlen);
   DVLOG(2) << "next protocol: '" << npn_proto_ << "' status: " << npn_status_;
   set_negotiation_extension(kExtensionNPN);
   return SSL_TLSEXT_ERR_OK;
 }
 
 long SSLClientSocketOpenSSL::MaybeReplayTransportError(
     BIO *bio,
@@ skipping 97 matching lines @@
                                             ct::SCT_STATUS_LOG_UNKNOWN));
   }
 }
 
 scoped_refptr<X509Certificate>
 SSLClientSocketOpenSSL::GetUnverifiedServerCertificateChain() const {
   return server_cert_;
 }
 
 }  // namespace net