Adding instrumentation to locate the source of jankiness.

net/socket/ssl_client_socket_nss.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.
 
 // This file includes code SSLClientSocketNSS::DoVerifyCertComplete() derived
 // from AuthCertificateCallback() in
 // mozilla/security/manager/ssl/src/nsNSSCallbacks.cpp.
 
 /* ***** BEGIN LICENSE BLOCK *****
  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
@@ skipping 2270 matching lines @@
   // the network task runner.
   PostOrRunCallback(
       FROM_HERE,
       base::Bind(&Core::OnNSSBufferUpdated, this, amount_in_read_buffer));
   PostOrRunCallback(
       FROM_HERE,
       base::Bind(&Core::DidNSSRead, this, rv));
   // TODO(vadimt): Remove ScopedTracker below once crbug.com/418183 is fixed.
   tracked_objects::ScopedTracker tracking_profile1(
       FROM_HERE_WITH_EXPLICIT_FUNCTION(
-          "SSLClientSocketNSS::Core::DoReadCallback"));
+          "418183 SSLClientSocketNSS::Core::DoReadCallback"));
   PostOrRunCallback(
       FROM_HERE,
       base::Bind(base::ResetAndReturn(&user_read_callback_), rv));
 }
 
 void SSLClientSocketNSS::Core::DoWriteCallback(int rv) {
   DCHECK(OnNSSTaskRunner());
   DCHECK_NE(ERR_IO_PENDING, rv);
   DCHECK(!user_write_callback_.is_null());
 
@@ skipping 1333 matching lines @@
 scoped_refptr<X509Certificate>
 SSLClientSocketNSS::GetUnverifiedServerCertificateChain() const {
   return core_->state().server_cert.get();
 }
 
 ChannelIDService* SSLClientSocketNSS::GetChannelIDService() const {
   return channel_id_service_;
 }
 
 }  // namespace net