Instrumenting read callbacks to find jank in TCPSocketWin::Core::ReadDelegate::OnObjectSignaled

net/socket/tcp_socket_win.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/socket/tcp_socket.h"
 #include "net/socket/tcp_socket_win.h"
 
 #include <mstcpip.h>
 
 #include "base/callback_helpers.h"
@@ skipping 1017 matching lines @@
     // consume all the received data without resetting the event object.
     core_->WatchForRead();
     return;
   }
 
   waiting_read_ = false;
   core_->read_iobuffer_ = NULL;
   core_->read_buffer_length_ = 0;
 
   DCHECK_NE(rv, ERR_IO_PENDING);
+  // TODO(vadimt): Remove ScopedProfile below once crbug.com/418183 is fixed.
+  tracked_objects::ScopedProfile tracking_profile(
+      FROM_HERE_WITH_EXPLICIT_FUNCTION("TCPSocketWin::DidSignalRead"));
   base::ResetAndReturn(&read_callback_).Run(rv);
 }
 
 }  // namespace net