Add QUIC connection close details to the netlog.

R=rch@chromium.org

Change-Id: Ic8cbf358f796827f4570a8cb285a5438060ab953
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1506000
Commit-Queue: Ian Swett <ianswett@chromium.org>
Reviewed-by: Ryan Hamilton <rch@chromium.org>
Cr-Commit-Position: refs/heads/master@{#638396}

net/log/net_log_event_type_list.h

@@ -1989,7 +1989,9 @@ EVENT_TYPE(QUIC_SESSION_PUSH_PROMISE_RECEIVED)
 // Session was closed, either remotely or by the peer.
 //   {
 //     "quic_error": <quic::QuicErrorCode which caused the connection to be
-//     closed>, "from_peer":  <True if the peer closed the connection>
+//                    closed>,
+//     "details": <The error details string in the connection close.>,
+//     "from_peer":  <True if the peer closed the connection>
 //   }
 EVENT_TYPE(QUIC_SESSION_CLOSED)
 

net/quic/quic_connection_logger.cc

@@ -244,10 +244,12 @@ std::unique_ptr<base::Value> NetLogQuicCryptoHandshakeMessageCallback(
 
 std::unique_ptr<base::Value> NetLogQuicOnConnectionClosedCallback(
     quic::QuicErrorCode error,
+    string error_details,
     quic::ConnectionCloseSource source,
     NetLogCaptureMode /* capture_mode */) {
   std::unique_ptr<base::DictionaryValue> dict(new base::DictionaryValue());
   dict->SetInteger("quic_error", error);
+  dict->SetString("details", error_details);
   dict->SetBoolean("from_peer", source == quic::ConnectionCloseSource::FROM_PEER
                                     ? true
                                     : false);
@@ -797,9 +799,9 @@ void QuicConnectionLogger::OnConnectionClosed(
     quic::ConnectionCloseSource source) {
   if (!net_log_is_capturing_)
     return;
-  net_log_.AddEvent(
-      NetLogEventType::QUIC_SESSION_CLOSED,
-      base::Bind(&NetLogQuicOnConnectionClosedCallback, error, source));
+  net_log_.AddEvent(NetLogEventType::QUIC_SESSION_CLOSED,
+                    base::Bind(&NetLogQuicOnConnectionClosedCallback, error,
+                               error_details, source));
 }
 
 void QuicConnectionLogger::OnSuccessfulVersionNegotiation(