Speculative fix for chromium-os:4706 - use singleton NetworkLibrary rather than create our own

chrome/browser/geolocation/wifi_data_provider_chromeos.h

 // Copyright (c) 2010 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 CHROME_BROWSER_GEOLOCATION_WIFI_DATA_PROVIDER_CHROMEOS_H_
 #define CHROME_BROWSER_GEOLOCATION_WIFI_DATA_PROVIDER_CHROMEOS_H_
 #pragma once
 
 #include "chrome/browser/geolocation/wifi_data_provider_common.h"
 
 #include "base/scoped_ptr.h"
 
 namespace chromeos { class NetworkLibrary; }
 
 class WifiDataProviderChromeOs : public WifiDataProviderCommon {
  public:
   WifiDataProviderChromeOs();
 
   // Allows injection of |lib| for testing.
   static WlanApiInterface* NewWlanApi(chromeos::NetworkLibrary* lib);
 
  private:
   virtual ~WifiDataProviderChromeOs();
 
   // WifiDataProviderCommon
   virtual WlanApiInterface* NewWlanApi();
   virtual PollingPolicyInterface* NewPollingPolicy();
 
-  scoped_ptr<chromeos::NetworkLibrary> network_library_;
-
   DISALLOW_COPY_AND_ASSIGN(WifiDataProviderChromeOs);
 };
 
 #endif  // CHROME_BROWSER_GEOLOCATION_WIFI_DATA_PROVIDER_CHROMEOS_H_