Change how QUIC negotiates pacing from congestion feedback to QUIC

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 fe1bbd1cb1f2c609e5012f7e8b345cc8a5da71c5..0c86d033e6875a820d745f86b38439b43b040de0 100644
--- a/net/tools/quic/end_to_end_test.cc
+++ b/net/tools/quic/end_to_end_test.cc
@@ -292,6 +292,11 @@ class EndToEndTest : public ::testing::TestWithParam<TestParams> {
   bool Initialize() {
     QuicTagVector copt;
 
+    if (GetParam().use_pacing) {
+      copt.push_back(kPACE);
+    }
+    server_config_.SetConnectionOptionsToSend(copt);
+
     // TODO(nimia): Consider setting the congestion control algorithm for the
     // client as well according to the test parameter.
     copt.push_back(GetParam().congestion_control_tag);