[signin] Support for CrOS and OAuth2AccessTokenConsumer services.

chrome/browser/chromeos/login/online_attempt.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_CHROMEOS_LOGIN_ONLINE_ATTEMPT_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_ONLINE_ATTEMPT_H_
 
 #include <string>
 
 #include "base/compiler_specific.h"
 #include "base/gtest_prod_util.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
+#include "base/observer_list.h"
 #include "chrome/browser/chromeos/login/login_status_consumer.h"
 #include "chrome/browser/net/gaia/gaia_oauth_consumer.h"
 #include "chrome/browser/net/gaia/gaia_oauth_fetcher.h"
+#include "chrome/browser/signin/signin_internals_util.h"
 #include "google_apis/gaia/gaia_auth_consumer.h"
 #include "google_apis/gaia/google_service_auth_error.h"
 
 class GaiaAuthFetcher;
 class Profile;
 
 namespace chromeos {
 class AuthAttemptState;
 class AuthAttemptStateResolver;
 
@@ skipping 18 matching lines @@
   virtual void OnClientLoginSuccess(
       const GaiaAuthConsumer::ClientLoginResult& credentials) OVERRIDE;
 
   // GaiaOAuthConsumer overrides. Callbacks from GaiaOAuthFetcher.
   virtual void OnOAuthLoginSuccess(const std::string& sid,
                                    const std::string& lsid,
                                    const std::string& auth) OVERRIDE;
   virtual void OnOAuthLoginFailure(
       const GoogleServiceAuthError& error) OVERRIDE;
 
+  // Methods to register (and remove) observers interested in signin
+  // diagnostics related information updates.
+  void AddSigninDiagnosticsObserver(
+      signin_internals_util::SigninDiagnosticsObserver* observer);
+  void RemoveSigninDiagnosticsObserver(
+      signin_internals_util::SigninDiagnosticsObserver* observer);
+
  private:
   FRIEND_TEST_ALL_PREFIXES(OnlineAttemptTest, LoginSuccess);
   FRIEND_TEST_ALL_PREFIXES(OnlineAttemptTest, TwoFactorSuccess);
 
   // Milliseconds until we timeout our attempt to hit ClientLogin.
   static const int kClientLoginTimeoutMs;
 
   void TryClientLogin();
   void CancelClientLogin();
 
@@ skipping 12 matching lines @@
   scoped_ptr<GaiaAuthFetcher> client_fetcher_;
   // Handles OAuthLogin communications with Gaia.
   scoped_ptr<GaiaOAuthFetcher> oauth_fetcher_;
 
   // Used to cancel the CancelClientLogin closure.
   base::WeakPtrFactory<OnlineAttempt> weak_factory_;
 
   // Whether we're willing to re-try the ClientLogin attempt.
   bool try_again_;
 
+  // A list of interested observers.
+  ObserverList<signin_internals_util::SigninDiagnosticsObserver>
+      signin_diagnostics_observers_;
+
   friend class OnlineAttemptTest;
   DISALLOW_COPY_AND_ASSIGN(OnlineAttempt);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_ONLINE_ATTEMPT_H_