Turn on FLAGS_quic_reloadable_flag_quic_enable_version_42_2.

R=rch@chromium.org

Change-Id: Ia026d7497a2a901d231973a03effad0868f547d1
Reviewed-on: https://chromium-review.googlesource.com/953742Reviewed-by: Ryan Hamilton <rch@chromium.org>
Commit-Queue: Fan Yang <fayang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#541780}

net/quic/core/quic_flags_list.h

@@ -152,7 +152,7 @@ QUIC_FLAG(
 QUIC_FLAG(bool, FLAGS_quic_enable_version_99, false)
 
 // If true, enable QUIC version 42.
-QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_enable_version_42_2, false)
+QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_enable_version_42_2, true)
 
 QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_disable_version_37, false)
 QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_disable_version_38, false)