class GURL;
class Profile;
class ProfileOAuth2TokenService;
+class SigninManagerBase;
namespace drive { class DriveUploaderInterface; }
scoped_ptr<drive::DriveUploaderInterface> drive_uploader_;
ProfileOAuth2TokenService* oauth_service_;
+ SigninManagerBase* signin_manager_;
UploadCallbackMap upload_callback_map_;
UploadKey upload_next_key_;