Remove unnecessary instrumentation for several jank bugs.

net/quic/crypto/quic_crypto_client_config.cc

 // Copyright 2013 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/quic/crypto/quic_crypto_client_config.h"
 
 #include "base/metrics/histogram.h"
 #include "base/metrics/sparse_histogram.h"
-#include "base/profiler/scoped_tracker.h"
 #include "base/stl_util.h"
 #include "base/strings/string_util.h"
 #include "net/quic/crypto/cert_compressor.h"
 #include "net/quic/crypto/chacha20_poly1305_encrypter.h"
 #include "net/quic/crypto/channel_id.h"
 #include "net/quic/crypto/common_cert_set.h"
 #include "net/quic/crypto/crypto_framer.h"
 #include "net/quic/crypto/crypto_utils.h"
 #include "net/quic/crypto/curve25519_key_exchange.h"
 #include "net/quic/crypto/key_exchange.h"
@@ skipping 374 matching lines @@
     const QuicServerId& server_id,
     QuicConnectionId connection_id,
     const QuicVersion preferred_version,
     const CachedState* cached,
     QuicWallTime now,
     QuicRandom* rand,
     const ChannelIDKey* channel_id_key,
     QuicCryptoNegotiatedParameters* out_params,
     CryptoHandshakeMessage* out,
     string* error_details) const {
-  // TODO(rtenneti): Remove ScopedTracker below once crbug.com/422516 is fixed.
-  tracked_objects::ScopedTracker tracking_profile(
-      FROM_HERE_WITH_EXPLICIT_FUNCTION(
-          "422516 QuicCryptoClientConfig::FillClientHello"));
-
   DCHECK(error_details != nullptr);
 
   FillInchoateClientHello(server_id, preferred_version, cached,
                           out_params, out);
 
   const CryptoHandshakeMessage* scfg = cached->GetServerConfig();
   if (!scfg) {
     // This should never happen as our caller should have checked
     // cached->IsComplete() before calling this function.
     *error_details = "Handshake not ready";
@@ skipping 456 matching lines @@
   }
 
   // Update canonical version to point at the "most recent" entry.
   canonical_server_map_[suffix_server_id] = server_id;
 
   server_state->InitializeFrom(*canonical_state);
   return true;
 }
 
 }  // namespace net