[cros login] Split login related classes into subfolders.

chrome/browser/chromeos/login/oauth2_token_fetcher.h

-// Copyright (c) 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_LOGIN_OAUTH2_TOKEN_FETCHER_H_
-#define CHROME_BROWSER_CHROMEOS_LOGIN_OAUTH2_TOKEN_FETCHER_H_
-
-#include <string>
-
-#include "base/basictypes.h"
-#include "base/callback_forward.h"
-#include "base/compiler_specific.h"
-#include "base/memory/weak_ptr.h"
-#include "google_apis/gaia/gaia_auth_consumer.h"
-#include "google_apis/gaia/gaia_auth_fetcher.h"
-
-namespace net {
-class URLRequestContextGetter;
-}
-
-namespace chromeos {
-
-// OAuth2TokenFetcher is used to convert authenticated cookie jar from the
-// authentication profile into OAuth2 tokens and GAIA credentials that will be
-// used to kick off other token retrieval tasks.
-class OAuth2TokenFetcher : public base::SupportsWeakPtr<OAuth2TokenFetcher>,
-                           public GaiaAuthConsumer {
- public:
-  class Delegate {
-   public:
-    virtual ~Delegate() {}
-    virtual void OnOAuth2TokensAvailable(
-        const GaiaAuthConsumer::ClientOAuthResult& oauth2_tokens) = 0;
-    virtual void OnOAuth2TokensFetchFailed() = 0;
-  };
-
-  OAuth2TokenFetcher(OAuth2TokenFetcher::Delegate* delegate,
-                     net::URLRequestContextGetter* context_getter);
-  virtual ~OAuth2TokenFetcher();
-
-  void StartExchangeFromCookies(const std::string& session_index);
-  void StartExchangeFromAuthCode(const std::string& auth_code);
-
- private:
-  // Decides how to proceed on GAIA |error|. If the error looks temporary,
-  // retries |task| until max retry count is reached.
-  // If retry count runs out, or error condition is unrecoverable, it runs
-  // |error_handler|.
-  void RetryOnError(const GoogleServiceAuthError& error,
-                    const base::Closure& task,
-                    const base::Closure& error_handler);
-
-  // GaiaAuthConsumer overrides.
-  virtual void OnClientOAuthSuccess(
-      const GaiaAuthConsumer::ClientOAuthResult& result) OVERRIDE;
-  virtual void OnClientOAuthFailure(
-      const GoogleServiceAuthError& error) OVERRIDE;
-
-  OAuth2TokenFetcher::Delegate* delegate_;
-  GaiaAuthConsumer::ClientOAuthResult oauth_tokens_;
-  GaiaAuthFetcher auth_fetcher_;
-
-  // The retry counter. Increment this only when failure happened.
-  int retry_count_;
-  std::string session_index_;
-  std::string auth_code_;
-
-  DISALLOW_COPY_AND_ASSIGN(OAuth2TokenFetcher);
-};
-
-}  // namespace chromeos
-
-#endif  // CHROME_BROWSER_CHROMEOS_LOGIN_OAUTH2_TOKEN_FETCHER_H_