Drop Packets with the multipath bit set before decryption. Protected by FLAGS_quic_reloadable_flag_…

net/quic/core/quic_framer_test.cc

Index: net/quic/core/quic_framer_test.cc
diff --git a/net/quic/core/quic_framer_test.cc b/net/quic/core/quic_framer_test.cc
index a52369272b8b4885f7a3dfdd62eabc9cd42f1f8b..b9294f112ddff246ee3aa19a2a35b3e23dcb1cb7 100644
--- a/net/quic/core/quic_framer_test.cc
+++ b/net/quic/core/quic_framer_test.cc
@@ -915,7 +915,8 @@ TEST_P(QuicFramerTest, PacketWithDiversificationNonce) {
   // clang-format off
   unsigned char packet[] = {
     // public flags: includes nonce flag
-    0x7C,
+    static_cast<unsigned char>(
+        FLAGS_quic_reloadable_flag_quic_remove_multipath_bit ? 0x3C : 0x7C),
     // connection_id
     0x10, 0x32, 0x54, 0x76, 0x98, 0xBA, 0xDC, 0xFE,
     // nonce
@@ -945,7 +946,8 @@ TEST_P(QuicFramerTest, LargePublicFlagWithMismatchedVersions) {
   // clang-format off
   unsigned char packet[] = {
     // public flags (8 byte connection_id, version flag and an unknown flag)
-    0x79,
+    static_cast<unsigned char>(
+        FLAGS_quic_reloadable_flag_quic_remove_multipath_bit ? 0x39 : 0x79),
     // connection_id
     0x10, 0x32, 0x54, 0x76,
     0x98, 0xBA, 0xDC, 0xFE,