Fix chromeos::ProxyConfigServiceImpl not setting ProxyConfig on start.

components/proxy_config/pref_proxy_config_tracker_impl.h

 // 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.
 
 #ifndef COMPONENTS_PROXY_CONFIG_PREF_PROXY_CONFIG_TRACKER_IMPL_H_
 #define COMPONENTS_PROXY_CONFIG_PREF_PROXY_CONFIG_TRACKER_IMPL_H_
 
 #include <memory>
 
 #include "base/macros.h"
@@ skipping 131 matching lines @@
   ProxyPrefs::ConfigState GetProxyConfig(net::ProxyConfig* config);
 
   // Called when there's a change in prefs proxy config.
   // Subclasses can extend it for changes in other sources of proxy config.
   virtual void OnProxyConfigChanged(ProxyPrefs::ConfigState config_state,
                                     const net::ProxyConfig& config);
 
   void OnProxyPrefChanged();
 
   const PrefService* prefs() const { return pref_service_; }
-  bool update_pending() const { return update_pending_; }
 
  private:
   // Tracks configuration state. |pref_config_| is valid only if |config_state_|
   // is not CONFIG_UNSET.
   ProxyPrefs::ConfigState config_state_;
 
   // Configuration as defined by prefs.
   net::ProxyConfig pref_config_;
 
   PrefService* pref_service_;
   ProxyConfigServiceImpl* proxy_config_service_impl_;  // Weak ptr.
-  bool update_pending_;  // True if config has not been pushed to network stack.
   PrefChangeRegistrar proxy_prefs_;
 
   scoped_refptr<base::SingleThreadTaskRunner> io_task_runner_;
 
   base::ThreadChecker thread_checker_;
 
   DISALLOW_COPY_AND_ASSIGN(PrefProxyConfigTrackerImpl);
 };
 
 #endif  // COMPONENTS_PROXY_CONFIG_PREF_PROXY_CONFIG_TRACKER_IMPL_H_