deprecate -FLAGS_quic_reloadable_flag_quic_disable_version_34 and remove support for QUIC v34.

net/quic/core/quic_server_session_base_test.cc

Index: net/quic/core/quic_server_session_base_test.cc
diff --git a/net/quic/core/quic_server_session_base_test.cc b/net/quic/core/quic_server_session_base_test.cc
index 800289185752560a9d689ed89f871834378b6d10..b50515375c4f41d883368c524685a4e237da2260 100644
--- a/net/quic/core/quic_server_session_base_test.cc
+++ b/net/quic/core/quic_server_session_base_test.cc
@@ -193,11 +193,7 @@ TEST_P(QuicServerSessionBaseTest, ServerPushDisabledByDefault) {
       session_->config()->HasReceivedConnectionOptions() &&
       ContainsQuicTag(session_->config()->ReceivedConnectionOptions(), kSPSH));
   session_->OnConfigNegotiated();
-  if (GetParam() <= QUIC_VERSION_34) {
-    EXPECT_FALSE(session_->server_push_enabled());
-  } else {
-    EXPECT_TRUE(session_->server_push_enabled());
-  }
+  EXPECT_TRUE(session_->server_push_enabled());
 }
 
 TEST_P(QuicServerSessionBaseTest, CloseStreamDueToReset) {
@@ -277,10 +273,6 @@ TEST_P(QuicServerSessionBaseTest, MaxOpenStreams) {
   // streams.  The server accepts slightly more than the negotiated stream limit
   // to deal with rare cases where a client FIN/RST is lost.
 
-  if (GetParam() <= QUIC_VERSION_34) {
-    EXPECT_EQ(kMaxStreamsForTest, session_->max_open_incoming_streams());
-  }
-
   // The slightly increased stream limit is set during config negotiation.  It
   // is either an increase of 10 over negotiated limit, or a fixed percentage
   // scaling, whichever is larger. Test both before continuing.
@@ -319,10 +311,6 @@ TEST_P(QuicServerSessionBaseTest, MaxAvailableStreams) {
   // streams available.  The server accepts slightly more than the negotiated
   // stream limit to deal with rare cases where a client FIN/RST is lost.
 
-  if (GetParam() <= QUIC_VERSION_34) {
-    // The slightly increased stream limit is set during config negotiation.
-    EXPECT_EQ(kMaxStreamsForTest, session_->max_open_incoming_streams());
-  }
   session_->OnConfigNegotiated();
   const size_t kAvailableStreamLimit = session_->MaxAvailableStreams();
   EXPECT_EQ(