Convert a few lingering DFATALs to QUIC_BUG. Not flag protected.

net/tools/quic/quic_client_session.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "net/tools/quic/quic_client_session.h"
 
 #include "base/logging.h"
 #include "net/quic/chromium/crypto/proof_verifier_chromium.h"
 #include "net/quic/core/crypto/crypto_protocol.h"
+#include "net/quic/core/quic_bug_tracker.h"
 #include "net/quic/core/quic_server_id.h"
 #include "net/tools/quic/quic_spdy_client_stream.h"
 
 using std::string;
 
 namespace net {
 
 QuicClientSession::QuicClientSession(
     const QuicConfig& config,
     QuicConnection* connection,
@@ skipping 63 matching lines @@
 int QuicClientSession::GetNumSentClientHellos() const {
   return crypto_stream_->num_sent_client_hellos();
 }
 
 int QuicClientSession::GetNumReceivedServerConfigUpdates() const {
   return crypto_stream_->num_scup_messages_received();
 }
 
 bool QuicClientSession::ShouldCreateIncomingDynamicStream(QuicStreamId id) {
   if (!connection()->connected()) {
-    LOG(DFATAL) << "ShouldCreateIncomingDynamicStream called when disconnected";
+    QUIC_BUG << "ShouldCreateIncomingDynamicStream called when disconnected";
     return false;
   }
   if (goaway_received() && respect_goaway_) {
     DVLOG(1) << "Failed to create a new outgoing stream. "
              << "Already received goaway.";
     return false;
   }
   if (id % 2 != 0) {
     LOG(WARNING) << "Received invalid push stream id " << id;
     connection()->CloseConnection(
@@ skipping 19 matching lines @@
   return new QuicCryptoClientStream(
       server_id_, this, new ProofVerifyContextChromium(0, BoundNetLog()),
       crypto_config_, this);
 }
 
 bool QuicClientSession::IsAuthorized(const string& authority) {
   return true;
 }
 
 }  // namespace net