Flip recent QUIC flags.

net/quic/quic_flags.cc

Index: net/quic/quic_flags.cc
diff --git a/net/quic/quic_flags.cc b/net/quic/quic_flags.cc
index bee604b6aa18e274dd7ebd5e264c116ae902fdcc..9b7401b2a408bc0028a6ddc067750bf3f34a08fc 100644
--- a/net/quic/quic_flags.cc
+++ b/net/quic/quic_flags.cc
@@ -46,7 +46,7 @@ bool FLAGS_quic_enable_multipath = false;
 bool FLAGS_quic_require_handshake_confirmation = false;
 
 // If true, Cubic's epoch is shifted when the sender is application-limited.
-bool FLAGS_shift_quic_cubic_epoch_when_app_limited = false;
+bool FLAGS_shift_quic_cubic_epoch_when_app_limited = true;
 
 // If true, QUIC will measure head of line (HOL) blocking due between
 // streams due to packet losses on the headers stream.  The
@@ -152,11 +152,11 @@ bool FLAGS_quic_socket_walltimestamps = false;
 // If true, default to immediate forward secure once established on the
 // server side, and the IPFS connection option disables this instead of
 // enabling it.
-bool FLAGS_quic_default_immediate_forward_secure = false;
+bool FLAGS_quic_default_immediate_forward_secure = true;
 
 // If true, QUIC respect HTTP2 SETTINGS frame rather than always close the
 // connection.
-bool FLAGS_quic_respect_http2_settings_frame = false;
+bool FLAGS_quic_respect_http2_settings_frame = true;
 
 // Do not use a QuicAckListener in order to confirm a larger Path MTU.
 bool FLAGS_quic_no_mtu_discovery_ack_listener = false;