Roll src/net/third_party/quiche/src/ 517beaa47..05c3b7867 (2 commits)

https://quiche.googlesource.com/quiche.git/+log/517beaa4782d..05c3b7867dfb

$ git log 517beaa47..05c3b7867 --date=short --no-merges --format='%ad %ae %s'
2020-05-27 wub Update quicunorderedmap to quichashmap in quicdispatcher, transportparameters, quicspdysession and qpackblockingmanager. no behavior change.
2020-05-26 renjietang Remove ALL_UNACKED_RETRANSMISSION from TransmissionType because it's not used anymore.

Created with:
  roll-dep src/net/third_party/quiche/src src/third_party/quic_trace/src

Change-Id: Ic854b26c758919f06dfa9312be523686ceab724e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2219090Reviewed-by: Zhongyi Shi <zhongyi@chromium.org>
Commit-Queue: Zhongyi Shi <zhongyi@chromium.org>
Commit-Queue: Haoyue Wang <haoyuewang@chromium.org>
Auto-Submit: Haoyue Wang <haoyuewang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#772473}

DEPS

@@ -305,7 +305,7 @@ vars = {
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling feed
   # and whatever else without interference from each other.
-  'quiche_revision': '517beaa4782d4ea46e207004ff1bcedca8cc6adf',
+  'quiche_revision': '05c3b7867dfb453652fe516d623b62ba2a15537f',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling ios_webkit
   # and whatever else without interference from each other.

net/quic/quic_flags_list.h

@@ -212,7 +212,7 @@ QUIC_FLAG(int32_t, FLAGS_quic_bbr2_default_probe_rtt_period_ms, 10000)
 
 // The default loss threshold for QUIC BBRv2, should be a value
 // between 0 and 1.
-QUIC_FLAG(double, FLAGS_quic_bbr2_default_loss_threshold, 0.3)
+QUIC_FLAG(double, FLAGS_quic_bbr2_default_loss_threshold, 0.02)
 
 // The default minimum number of loss marking events to exit STARTUP.
 QUIC_FLAG(int32_t, FLAGS_quic_bbr2_default_startup_full_loss_count, 8)
@@ -299,7 +299,7 @@ QUIC_FLAG(bool,
 // If true, QUIC will enable connection options LRTT+BBQ2 by default.
 QUIC_FLAG(bool,
           FLAGS_quic_reloadable_flag_quic_bbr_default_exit_startup_on_loss,
-          false)
+          true)
 
 // If true, server push will be allowed in QUIC versions using HTTP/3.
 QUIC_FLAG(bool, FLAGS_quic_enable_http3_server_push, false)
@@ -380,7 +380,7 @@ QUIC_FLAG(bool,
 QUIC_FLAG(
     bool,
     FLAGS_quic_reloadable_flag_quic_extend_idle_time_on_decryptable_packets,
-    false)
+    true)
 
 // If true, support for IETF QUIC 0-rtt is enabled.
 QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_enable_zero_rtt_for_tls, false)
@@ -410,7 +410,7 @@ QUIC_FLAG(
 // If true, check ShouldGeneratePacket for every crypto packet.
 QUIC_FLAG(bool,
           FLAGS_quic_reloadable_flag_quic_fix_checking_should_generate_packet,
-          false)
+          true)
 
 // If true, notify stream ID manager even connection disconnects.
 QUIC_FLAG(