Remove BORINGSSL_API_VERSION checks from quic code

These checks are no longer necessary, because BoringSSL in google3 (and
chromium) has been updated past
https://boringssl-review.googlesource.com/c/boringssl/+/42304 which
introduced the need for these checks.

PiperOrigin-RevId: 332568497
Change-Id: I385fae31c994b1de943ab60bff6f37d5b9ffd6a1

quic/core/tls_client_handshaker_test.cc

diff --git a/quic/core/tls_client_handshaker_test.cc b/quic/core/tls_client_handshaker_test.cc
index a4bd87e..bc61543 100644
--- a/quic/core/tls_client_handshaker_test.cc
+++ b/quic/core/tls_client_handshaker_test.cc
@@ -561,16 +561,11 @@
           [kTestAlpn](const std::vector<quiche::QuicheStringPiece>& alpns) {
             return std::find(alpns.cbegin(), alpns.cend(), kTestAlpn);
           });
-#if BORINGSSL_API_VERSION > 10
   EXPECT_CALL(*server_connection_,
               CloseConnection(QUIC_HANDSHAKE_FAILED,
                               "TLS handshake failure (ENCRYPTION_INITIAL) 120: "
                               "no application protocol",
                               _));
-#else  // BORINGSSL_API_VERSION <= 10
-  EXPECT_CALL(*connection_, CloseConnection(QUIC_HANDSHAKE_FAILED,
-                                            "Server did not select ALPN", _));
-#endif  // BORINGSSL_API_VERSION
 
   stream()->CryptoConnect();
   crypto_test_utils::AdvanceHandshake(connection_, stream(), 0,
@@ -578,13 +573,8 @@
 
   EXPECT_FALSE(stream()->one_rtt_keys_available());
   EXPECT_FALSE(server_stream()->one_rtt_keys_available());
-#if BORINGSSL_API_VERSION > 10
   EXPECT_FALSE(stream()->encryption_established());
   EXPECT_FALSE(server_stream()->encryption_established());
-#else  // BORINGSSL_API_VERSION <= 10
-  EXPECT_TRUE(stream()->encryption_established());
-  EXPECT_TRUE(server_stream()->encryption_established());
-#endif  // BORINGSSL_API_VERSION
 }
 
 TEST_P(TlsClientHandshakerTest, ZeroRTTNotAttemptedOnALPNChange) {

quic/core/tls_server_handshaker_test.cc

diff --git a/quic/core/tls_server_handshaker_test.cc b/quic/core/tls_server_handshaker_test.cc
index 8668b6a..2f8f4b8 100644
--- a/quic/core/tls_server_handshaker_test.cc
+++ b/quic/core/tls_server_handshaker_test.cc
@@ -307,7 +307,6 @@
   const std::string kTestBadClientAlpn = "bad-client-alpn";
   EXPECT_CALL(*client_session_, GetAlpnsToOffer())
       .WillOnce(Return(std::vector<std::string>({kTestBadClientAlpn})));
-#if BORINGSSL_API_VERSION > 10
   EXPECT_CALL(*server_connection_,
               CloseConnection(QUIC_HANDSHAKE_FAILED,
                               "TLS handshake failure (ENCRYPTION_INITIAL) 120: "
@@ -320,23 +319,6 @@
   EXPECT_FALSE(client_stream()->encryption_established());
   EXPECT_FALSE(server_stream()->one_rtt_keys_available());
   EXPECT_FALSE(server_stream()->encryption_established());
-#else  // BORINGSSL_API_VERSION <=10
-  EXPECT_CALL(
-      *client_connection_,
-      CloseConnection(QUIC_HANDSHAKE_FAILED, "Server did not select ALPN", _));
-  EXPECT_CALL(*server_connection_,
-              CloseConnection(QUIC_HANDSHAKE_FAILED,
-                              "Server did not receive a known ALPN", _));
-
-  // Process two flights of handshake messages.
-  AdvanceHandshakeWithFakeClient();
-  AdvanceHandshakeWithFakeClient();
-
-  EXPECT_FALSE(client_stream()->one_rtt_keys_available());
-  EXPECT_TRUE(client_stream()->encryption_established());
-  EXPECT_FALSE(server_stream()->one_rtt_keys_available());
-  EXPECT_TRUE(server_stream()->encryption_established());
-#endif  // BORINGSSL_API_VERSION
 }
 
 TEST_P(TlsServerHandshakerTest, CustomALPNNegotiation) {