Rename security handshaker files.
diff --git a/binding.gyp b/binding.gyp
index 1341f33..369a34a 100644
--- a/binding.gyp
+++ b/binding.gyp
@@ -718,9 +718,9 @@
'src/core/lib/security/credentials/plugin/plugin_credentials.c',
'src/core/lib/security/credentials/ssl/ssl_credentials.c',
'src/core/lib/security/transport/client_auth_filter.c',
- 'src/core/lib/security/transport/handshake.c',
'src/core/lib/security/transport/secure_endpoint.c',
'src/core/lib/security/transport/security_connector.c',
+ 'src/core/lib/security/transport/security_handshaker.c',
'src/core/lib/security/transport/server_auth_filter.c',
'src/core/lib/security/transport/tsi_error.c',
'src/core/lib/security/util/b64.c',