[Devtools] Allow User-Agent header override for Websockets

net/websockets/websocket_stream_cookie_test.cc

Index: net/websockets/websocket_stream_cookie_test.cc
diff --git a/net/websockets/websocket_stream_cookie_test.cc b/net/websockets/websocket_stream_cookie_test.cc
index 9ff71e001d9556ddacc0443050cb942bbb06dd9a..c3ae3a9afe00a09b43d71026a8e31cfcf04b6616 100644
--- a/net/websockets/websocket_stream_cookie_test.cc
+++ b/net/websockets/websocket_stream_cookie_test.cc
@@ -42,9 +42,10 @@ class TestBase : public WebSocketStreamCreateTestBase {
 
     url_request_context_host_.SetExpectations(
         WebSocketStandardRequestWithCookies(url.path(), url.host(), origin,
-                                            cookie_header, std::string()),
+                                            cookie_header, std::string(),
+                                            std::string()),
         response_body);
-    CreateAndConnectStream(url.spec(), NoSubProtocols(), origin, nullptr);
+    CreateAndConnectStream(url.spec(), NoSubProtocols(), origin, "", nullptr);
   }
 
   std::string AddCRLFIfNotEmpty(const std::string& s) {