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

net/proxy/proxy_config_service_linux.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/proxy/proxy_config_service_linux.h"
 
 #include <errno.h>
 #if defined(USE_GCONF)
 #include <gconf/gconf-client.h>
 #endif  // defined(USE_GCONF)
@@ skipping 845 matching lines @@
 #endif  // defined(USE_GIO)
 
 // This is the KDE version that reads kioslaverc and simulates gconf.
 // Doing this allows the main Delegate code, as well as the unit tests
 // for it, to stay the same - and the settings map fairly well besides.
 class SettingGetterImplKDE : public ProxyConfigServiceLinux::SettingGetter,
                              public base::MessagePumpLibevent::Watcher {
  public:
   explicit SettingGetterImplKDE(base::Environment* env_var_getter)
       : inotify_fd_(-1),
+        inotify_watcher_(FROM_HERE),
         notify_delegate_(nullptr),
         debounce_timer_(new base::OneShotTimer()),
         indirect_manual_(false),
         auto_no_pac_(false),
         reversed_bypass_list_(false),
         env_var_getter_(env_var_getter),
         file_task_runner_(nullptr) {
     // This has to be called on the UI thread (http://crbug.com/69057).
     base::ThreadRestrictions::ScopedAllowIO allow_io;
 
@@ skipping 905 matching lines @@
 void ProxyConfigServiceLinux::RemoveObserver(Observer* observer) {
   delegate_->RemoveObserver(observer);
 }
 
 ProxyConfigService::ConfigAvailability
     ProxyConfigServiceLinux::GetLatestProxyConfig(ProxyConfig* config) {
   return delegate_->GetLatestProxyConfig(config);
 }
 
 }  // namespace net