Public Sessions: fetch device robot api token during enterprise enrollment.

chrome/browser/chromeos/settings/device_oauth2_token_service.h

 // 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.
 
 #ifndef CHROME_BROWSER_CHROMEOS_SETTINGS_DEVICE_OAUTH2_TOKEN_SERVICE_H_
 #define CHROME_BROWSER_CHROMEOS_SETTINGS_DEVICE_OAUTH2_TOKEN_SERVICE_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 21 matching lines @@
 //
 // Note that requests must be made from the UI thread.
 class DeviceOAuth2TokenService : public OAuth2TokenService {
  public:
   // Persist the given refresh token on the device.  Overwrites any previous
   // value.  Should only be called during initial device setup.
   void SetAndSaveRefreshToken(const std::string& refresh_token);
 
   static void RegisterPrefs(PrefRegistrySimple* registry);
 
- protected:
   virtual std::string GetRefreshToken() OVERRIDE;
 
  private:
   friend class DeviceOAuth2TokenServiceFactory;
   FRIEND_TEST_ALL_PREFIXES(DeviceOAuth2TokenServiceTest, SaveEncryptedToken);
 
   // Use DeviceOAuth2TokenServiceFactory to get an instance of this class.
   explicit DeviceOAuth2TokenService(net::URLRequestContextGetter* getter,
                                     PrefService* local_state);
   virtual ~DeviceOAuth2TokenService();
 
   // Cache the decrypted refresh token, so we only decrypt once.
   std::string refresh_token_;
   PrefService* local_state_;
   DISALLOW_COPY_AND_ASSIGN(DeviceOAuth2TokenService);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_SETTINGS_DEVICE_OAUTH2_TOKEN_SERVICE_H_