Change X-Auto-Login implementation to use OAuth token.

chrome/browser/signin/ubertoken_fetcher.h

+// Copyright (c) 2012 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_SIGNIN_UBERTOKEN_FETCHER_H_
+#define CHROME_BROWSER_SIGNIN_UBERTOKEN_FETCHER_H_
+#pragma once
+
+#include "base/memory/scoped_ptr.h"
+#include "chrome/common/net/gaia/gaia_auth_consumer.h"
+#include "chrome/common/net/gaia/gaia_auth_fetcher.h"
+#include "chrome/common/net/gaia/gaia_oauth_client.h"
+#include "content/public/browser/notification_details.h"
+#include "content/public/browser/notification_observer.h"
+#include "content/public/browser/notification_registrar.h"
+#include "content/public/browser/notification_source.h"
+
+// Allow to retrieves an uber-auth token for the user. This class uses the
+// |TokenService| and considers that the user is already logged in. It will then
+// retrieve the OAuth2 refresh token, use it to generate an OAuth2 access token
+// and finally use this access token to generate the uber-auth token.
+//
+// This class should be used on a single thread, but it can be whichever thread
+// that you like.
+//
+// This class can handle one request at a time.
+
+class GoogleServiceAuthError;
+class Profile;
+
+// Callback for the |UbertokenFetcher| class.
+class UbertokenConsumer {
+ public:
+  UbertokenConsumer() {}
+  virtual ~UbertokenConsumer() {}
+  virtual void OnUbertokenSuccess(const std::string& token) {}
+  virtual void OnUbertokenFailure(const GoogleServiceAuthError& error) {}
+};
+
+// Allows to retrieve an uber-auth token.
+class UbertokenFetcher : public content::NotificationObserver,
+                         public gaia::GaiaOAuthClient::Delegate,
+                         public GaiaAuthConsumer {
+ public:
+  UbertokenFetcher(Profile* profile, UbertokenConsumer* consumer);
+  virtual ~UbertokenFetcher();
+
+  // Start fetching the token.
+  void StartFetchingToken();
+
+  // Overriden from gaia::GaiaOAuthClient::Delegate:
+  virtual void OnGetTokensResponse(const std::string& refresh_token,
+                                   const std::string& access_token,
+                                   int expires_in_seconds) OVERRIDE;
+  virtual void OnRefreshTokenResponse(const std::string& access_token,
+                                      int expires_in_seconds) OVERRIDE;
+  virtual void OnOAuthError() OVERRIDE;
+  virtual void OnNetworkError(int response_code) OVERRIDE;
+
+  // Overriden from GaiaAuthConsumer
+  virtual void OnUberAuthTokenSuccess(const std::string& token) OVERRIDE;
+  virtual void OnUberAuthTokenFailure(
+      const GoogleServiceAuthError& error) OVERRIDE;
+
+  // Overriden from content::NotificationObserver:
+  virtual void Observe(int type,
+                       const content::NotificationSource& source,
+                       const content::NotificationDetails& details) OVERRIDE;
+
+ private:
+  void StartFetchingUbertoken();
+
+  Profile* profile_;
+  UbertokenConsumer* consumer_;
+  content::NotificationRegistrar registrar_;
+  scoped_ptr<gaia::GaiaOAuthClient> gaia_oauth_client_;
+  scoped_ptr<GaiaAuthFetcher> gaia_auth_fetcher_;
+
+  DISALLOW_COPY_AND_ASSIGN(UbertokenFetcher);
+};
+
+#endif  // CHROME_BROWSER_SIGNIN_UBERTOKEN_FETCHER_H_