servodriver: Use config property instead of kwarg for browser kwargs.
diff --git a/tools/wptrunner/wptrunner/browsers/servodriver.py b/tools/wptrunner/wptrunner/browsers/servodriver.py
index ad3ac32..f6777aa 100644
--- a/tools/wptrunner/wptrunner/browsers/servodriver.py
+++ b/tools/wptrunner/wptrunner/browsers/servodriver.py
@@ -38,7 +38,7 @@
"binary": kwargs["binary"],
"binary_args": kwargs["binary_args"],
"debug_info": kwargs["debug_info"],
- "server_config": kwargs["config"],
+ "server_config": config.ssl_config["ca_cert_path"],
"user_stylesheets": kwargs.get("user_stylesheets"),
}