Use the location where FileDescriptorWatcher is created to track the libevent handlers

chrome/browser/apps/app_shim/unix_domain_socket_acceptor.cc

 // Copyright 2014 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 "chrome/browser/apps/app_shim/unix_domain_socket_acceptor.h"
 
 #include <utility>
 
 #include "base/logging.h"
 #include "mojo/edk/embedder/named_platform_handle_utils.h"
 #include "mojo/edk/embedder/platform_channel_utils_posix.h"
 
 namespace apps {
 
 UnixDomainSocketAcceptor::UnixDomainSocketAcceptor(const base::FilePath& path,
                                                    Delegate* delegate)
-    : named_pipe_(path.value()),
+    : server_listen_connection_watcher_(FROM_HERE),
+      named_pipe_(path.value()),
       delegate_(delegate),
       listen_handle_(mojo::edk::CreateServerHandle(named_pipe_)) {
   DCHECK(delegate_);
 }
 
 UnixDomainSocketAcceptor::~UnixDomainSocketAcceptor() {
   Close();
 }
 
 bool UnixDomainSocketAcceptor::Listen() {
@@ skipping 37 matching lines @@
     return;
   listen_handle_.reset();
   if (unlink(named_pipe_.name.c_str()) < 0)
     PLOG(ERROR) << "unlink";
 
   // Unregister libevent for the listening socket and close it.
   server_listen_connection_watcher_.StopWatchingFileDescriptor();
 }
 
 }  // namespace apps