Fix QUIC end to end test

net/tools/quic/end_to_end_test.cc

Index: net/tools/quic/end_to_end_test.cc
diff --git a/net/tools/quic/end_to_end_test.cc b/net/tools/quic/end_to_end_test.cc
index b99cf1e454b7cf20c2e580c1f9b670c637b575b5..329d466fe098f9d8916c441ae45cc20d4c4654bc 100644
--- a/net/tools/quic/end_to_end_test.cc
+++ b/net/tools/quic/end_to_end_test.cc
@@ -1721,7 +1721,7 @@ TEST_P(EndToEndTest, AckNotifierWithPacketLossAndBlockedSocket) {
   EXPECT_EQ(200u, client_->response_headers()->parsed_response_code());
 
   // Send another request to flush out any pending ACKs on the server.
-  client_->SendSynchronousRequest(request_string);
+  client_->SendSynchronousRequest("/bar");
 
   // Pause the server to avoid races.
   server_thread_->Pause();