SSL: remove NOTREACHED from GetNextProto error path.

net/http/http_network_transaction.cc

Index: net/http/http_network_transaction.cc
diff --git a/net/http/http_network_transaction.cc b/net/http/http_network_transaction.cc
index 5dc01ca6bee1a07b8f4bc301928fa0f5062fe0a0..6006ccc65d492dcc3aa800671a5c74b565ff72ee 100644
--- a/net/http/http_network_transaction.cc
+++ b/net/http/http_network_transaction.cc
@@ -799,10 +799,17 @@ int HttpNetworkTransaction::DoSSLConnect() {
 int HttpNetworkTransaction::DoSSLConnectComplete(int result) {
   SSLClientSocket* ssl_socket =
       reinterpret_cast<SSLClientSocket*>(connection_->socket());
+
+  SSLClientSocket::NextProtoStatus status =
+      SSLClientSocket::kNextProtoUnsupported;
   std::string proto;
-  SSLClientSocket::NextProtoStatus status = ssl_socket->GetNextProto(&proto);
+  // GetNextProto will fail and and trigger a NOTREACHED if we pass in a socket
+  // that hasn't had SSL_ImportFD called on it. If we get a certificate error
+  // here, then we know that we called SSL_ImportFD.
+  if (result == OK || IsCertificateError(result))
+    status = ssl_socket->GetNextProto(&proto);
   static const char kSpdyProto[] = "spdy";
-  const bool use_spdy = (status != SSLClientSocket::kNextProtoUnsupported &&
+  const bool use_spdy = (status == SSLClientSocket::kNextProtoNegotiated &&
                          proto == kSpdyProto);
 
   if (IsCertificateError(result)) {