Remove path id from IV in QUIC encrytion algorithms.

net/quic/core/crypto/chacha20_poly1305_encrypter_test.cc

Index: net/quic/core/crypto/chacha20_poly1305_encrypter_test.cc
diff --git a/net/quic/core/crypto/chacha20_poly1305_encrypter_test.cc b/net/quic/core/crypto/chacha20_poly1305_encrypter_test.cc
index 0ec5308728f40c676efef81852da5eccaa19fbd1..97528430ee33858689991bf6c8659a8b4603a649 100644
--- a/net/quic/core/crypto/chacha20_poly1305_encrypter_test.cc
+++ b/net/quic/core/crypto/chacha20_poly1305_encrypter_test.cc
@@ -94,18 +94,17 @@ TEST(ChaCha20Poly1305EncrypterTest, EncryptThenDecrypt) {
   ASSERT_TRUE(encrypter.SetNoncePrefix("abcd"));
   ASSERT_TRUE(decrypter.SetNoncePrefix("abcd"));
 
-  QuicPathId path_id = 0x42;
   QuicPacketNumber packet_number = UINT64_C(0x123456789ABC);
   string associated_data = "associated_data";
   string plaintext = "plaintext";
   char encrypted[1024];
   size_t len;
-  ASSERT_TRUE(encrypter.EncryptPacket(QuicVersionMax(), path_id, packet_number,
+  ASSERT_TRUE(encrypter.EncryptPacket(QuicVersionMax(), packet_number,
                                       associated_data, plaintext, encrypted,
                                       &len, arraysize(encrypted)));
   StringPiece ciphertext(encrypted, len);
   char decrypted[1024];
-  ASSERT_TRUE(decrypter.DecryptPacket(QuicVersionMax(), path_id, packet_number,
+  ASSERT_TRUE(decrypter.DecryptPacket(QuicVersionMax(), packet_number,
                                       associated_data, ciphertext, decrypted,
                                       &len, arraysize(decrypted)));
 }