[Extensions] Remove unused parts of the preferencesPrivate API

chrome/browser/extensions/api/preference/chrome_direct_setting_api.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 "chrome/browser/extensions/api/preference/chrome_direct_setting_api.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/containers/hash_tables.h"
@@ skipping 13 matching lines @@
     "types.private.ChromeDirectSetting.%s.onChange";
 
 class PreferenceWhitelist {
  public:
   PreferenceWhitelist() {
     // Note: DO NOT add any setting here that does not have a UI element in
     // chrome://settings unless you write a component extension that is always
     // installed. Otherwise, users may install your extension, the extension may
     // toggle settings, and after the extension has been disabled/uninstalled
     // the toggled setting remains in place. See http://crbug.com/164227#c157 .
-    whitelist_.insert("googlegeolocationaccess.enabled");
     // The following settings need to be checked and probably removed. See
     // http://crbug.com/164227#c157 .
     whitelist_.insert("easy_unlock.proximity_required");
   }
 
   ~PreferenceWhitelist() {}
 
   bool IsPreferenceOnWhitelist(const std::string& pref_key){
     return whitelist_.find(pref_key) != whitelist_.end();
   }
@@ skipping 116 matching lines @@
         scoped_ptr<Event> event(
             new Event(histogram_value, event_name, std::move(args_copy)));
         router->DispatchEventToExtension(extension_id, std::move(event));
       }
     }
   }
 }
 
 }  // namespace chromedirectsetting
 }  // namespace extensions