Use sockets with unread data if they've never been used before.

net/socket/ssl_client_socket_openssl.h

Index: net/socket/ssl_client_socket_openssl.h
diff --git a/net/socket/ssl_client_socket_openssl.h b/net/socket/ssl_client_socket_openssl.h
index 8952fefb127dfab4a83affe18cc56afa262ce558..6187c72e9fc99517ea49a5c42f3ba76b2d861ab3 100644
--- a/net/socket/ssl_client_socket_openssl.h
+++ b/net/socket/ssl_client_socket_openssl.h
@@ -187,6 +187,10 @@ class SSLClientSocketOpenSSL : public SSLClientSocket {
   CertVerifyResult server_cert_verify_result_;
   bool completed_handshake_;
 
+  // Set when Read() or Write() successfully reads or writes data to or from the
+  // network.
+  bool was_ever_used_;
+
   // Stores client authentication information between ClientAuthHandler and
   // GetSSLCertRequestInfo calls.
   bool client_auth_cert_needed_;