place security_connector in its own subdirectory
diff --git a/gRPC-Core.podspec b/gRPC-Core.podspec
index 95db0d8..6459836 100644
--- a/gRPC-Core.podspec
+++ b/gRPC-Core.podspec
@@ -283,10 +283,10 @@
                       'src/core/lib/security/credentials/oauth2/oauth2_credentials.h',
                       'src/core/lib/security/credentials/plugin/plugin_credentials.h',
                       'src/core/lib/security/credentials/ssl/ssl_credentials.h',
+                      'src/core/lib/security/security_connector/security_connector.h',
                       'src/core/lib/security/transport/auth_filters.h',
                       'src/core/lib/security/transport/lb_targets_info.h',
                       'src/core/lib/security/transport/secure_endpoint.h',
-                      'src/core/lib/security/transport/security_connector.h',
                       'src/core/lib/security/transport/security_handshaker.h',
                       'src/core/lib/security/transport/tsi_error.h',
                       'src/core/lib/security/util/json_util.h',
@@ -642,10 +642,10 @@
                       'src/core/lib/security/credentials/oauth2/oauth2_credentials.cc',
                       'src/core/lib/security/credentials/plugin/plugin_credentials.cc',
                       'src/core/lib/security/credentials/ssl/ssl_credentials.cc',
+                      'src/core/lib/security/security_connector/security_connector.cc',
                       'src/core/lib/security/transport/client_auth_filter.cc',
                       'src/core/lib/security/transport/lb_targets_info.cc',
                       'src/core/lib/security/transport/secure_endpoint.cc',
-                      'src/core/lib/security/transport/security_connector.cc',
                       'src/core/lib/security/transport/security_handshaker.cc',
                       'src/core/lib/security/transport/server_auth_filter.cc',
                       'src/core/lib/security/transport/tsi_error.cc',
@@ -772,10 +772,10 @@
                               'src/core/lib/security/credentials/oauth2/oauth2_credentials.h',
                               'src/core/lib/security/credentials/plugin/plugin_credentials.h',
                               'src/core/lib/security/credentials/ssl/ssl_credentials.h',
+                              'src/core/lib/security/security_connector/security_connector.h',
                               'src/core/lib/security/transport/auth_filters.h',
                               'src/core/lib/security/transport/lb_targets_info.h',
                               'src/core/lib/security/transport/secure_endpoint.h',
-                              'src/core/lib/security/transport/security_connector.h',
                               'src/core/lib/security/transport/security_handshaker.h',
                               'src/core/lib/security/transport/tsi_error.h',
                               'src/core/lib/security/util/json_util.h',