- Electron version: 1.2.6
- Operating system: osx yosemite

Do the autoUpdater objects on osx and windows have different properties? On windows, when i do `console.log(JSON.stringify(autoUpdater));`
I see the properties `domain`, `_events`, `_eventsCount`, and `updateURL`. However, doing the same thing on osx only allows me to see the properties `_events` and `_eventsCount`. 

I want to access `updateURL` in my code but I'm wondering whether that property is accessible. Maybe I should submit a PR for a `getFeedURL` method?

atom/browser/auto_updater.h
#ifndef ATOM_BROWSER_AUTO_UPDATER_H_
#define ATOM_BROWSER_AUTO_UPDATER_H_
#include <map>
#include <string>
#include "base/macros.h"
#include "build/build_config.h"
namespace base {
class Time;
}
namespace auto_updater {
class Delegate {
 public:
  
  virtual void OnError(const std::string& error) {}
  
  virtual void OnCheckingForUpdate() {}
  
  virtual void OnUpdateAvailable() {}
  
  virtual void OnUpdateNotAvailable() {}
  
  virtual void OnUpdateDownloaded(const std::string& release_notes,
                                  const std::string& release_name,
                                  const base::Time& release_date,
                                  const std::string& update_url) {}
 protected:
  virtual ~Delegate() {}
};
class AutoUpdater {