Roll src/net/third_party/quiche/src/ a1fb8becd..e6fd1cf8d (5 commits)

https://quiche.googlesource.com/quiche.git/+log/a1fb8becdf2d..e6fd1cf8d622

$ git log a1fb8becd..e6fd1cf8d --date=short --no-merges --format='%ad %ae %s'
2020-11-19 wub Add a TlsServerHandshaker::ValidateHostname method to validate SNI.
2020-11-19 renjietang Add connection options to experiment client path degrading alarms with PTOs.
2020-11-19 danzh Add unused QuicSession interfaces to initiating IETF connection migration: MigratePath(), ValidatePath(). These new interfaces are used by toy client in e2e tests.
2020-11-19 bnc Internal QUICHE change
2020-11-18 quiche-dev Introduce QuicDatagramQueue::Observer

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

Change-Id: I1a3d2c6a5cea7b1bfe999c6622d392dc0a05cbd9
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2552221Reviewed-by: David Schinazi <dschinazi@chromium.org>
Commit-Queue: Victor Vasiliev <vasilvv@chromium.org>
Cr-Commit-Position: refs/heads/master@{#830208}

DEPS

@@ -331,7 +331,7 @@ 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': 'a1fb8becdf2da367a2df4b259e3df298e898041d',
+  'quiche_revision': 'e6fd1cf8d62270478827895c56f5427844e19f15',
   # 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_chromium_client_session.cc

@@ -2241,7 +2241,7 @@ void QuicChromiumClientSession::OnProbeSucceeded(
 
   // Notify the connection that migration succeeds after probing.
   if (connection()->IsPathDegrading())
-    connection()->OnSuccessfulMigrationAfterProbing();
+    connection()->OnSuccessfulMigration();
 
   net_log_.AddEventWithInt64Params(
       NetLogEventType::QUIC_CONNECTION_MIGRATION_SUCCESS_AFTER_PROBING,

net/quic/quic_transport_client.cc

@@ -285,7 +285,8 @@ void QuicTransportClient::CreateConnection() {
 
   session_ = std::make_unique<quic::QuicTransportClientSession>(
       connection_.get(), this, InitializeQuicConfig(*quic_context_->params()),
-      supported_versions_, url_, &crypto_config_, origin_, this);
+      supported_versions_, url_, &crypto_config_, origin_, this,
+      /*datagram_observer=*/nullptr);
 
   packet_reader_ = std::make_unique<QuicChromiumPacketReader>(
       socket_.get(), quic_context_->clock(), this, kQuicYieldAfterPacketsRead,

net/third_party/quiche/BUILD.gn

@@ -456,6 +456,8 @@ source_set("quiche") {
       "src/quic/core/quic_packet_writer.h",
       "src/quic/core/quic_packets.cc",
       "src/quic/core/quic_packets.h",
+      "src/quic/core/quic_path_validator.cc",
+      "src/quic/core/quic_path_validator.h",
       "src/quic/core/quic_protocol_flags_list.h",
       "src/quic/core/quic_received_packet_manager.cc",
       "src/quic/core/quic_received_packet_manager.h",
@@ -908,6 +910,8 @@ source_set("quic_test_tools_core") {
     "src/quic/test_tools/quic_interval_deque_peer.h",
     "src/quic/test_tools/quic_packet_creator_peer.cc",
     "src/quic/test_tools/quic_packet_creator_peer.h",
+    "src/quic/test_tools/quic_path_validator_peer.cc",
+    "src/quic/test_tools/quic_path_validator_peer.h",
     "src/quic/test_tools/quic_sent_packet_manager_peer.cc",
     "src/quic/test_tools/quic_sent_packet_manager_peer.h",
     "src/quic/test_tools/quic_server_session_base_peer.h",
@@ -1350,6 +1354,7 @@ source_set("quiche_tests") {
     "src/quic/core/quic_packet_creator_test.cc",
     "src/quic/core/quic_packet_number_test.cc",
     "src/quic/core/quic_packets_test.cc",
+    "src/quic/core/quic_path_validator_test.cc",
     "src/quic/core/quic_received_packet_manager_test.cc",
     "src/quic/core/quic_sent_packet_manager_test.cc",
     "src/quic/core/quic_server_id_test.cc",