Add IsAuthenticated() method to SigninManager.

chrome/browser/sync/profile_sync_service_startup_unittest.cc

 // 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.
 
 #include "base/files/file_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/prefs/pref_service.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/prefs/pref_service_syncable.h"
 #include "chrome/browser/signin/fake_profile_oauth2_token_service.h"
@@ skipping 197 matching lines @@
 
   static KeyedService* BuildCrosService(content::BrowserContext* context) {
     Profile* profile = static_cast<Profile*>(context);
     SigninManagerBase* signin =
         SigninManagerFactory::GetForProfile(profile);
     profile->GetPrefs()->SetString(prefs::kGoogleServicesUsername,
                                    "test_user@gmail.com");
     signin->SetAuthenticatedUsername("test_user@gmail.com");
     ProfileOAuth2TokenService* oauth2_token_service =
         ProfileOAuth2TokenServiceFactory::GetForProfile(profile);
-    EXPECT_FALSE(signin->GetAuthenticatedUsername().empty());
+    EXPECT_TRUE(signin->IsAuthenticated());
     return new TestProfileSyncServiceNoBackup(
         scoped_ptr<ProfileSyncComponentsFactory>(
             new ProfileSyncComponentsFactoryMock()),
         profile,
         make_scoped_ptr(new SupervisedUserSigninManagerWrapper(profile,
                                                                signin)),
         oauth2_token_service,
         browser_sync::AUTO_START);
   }
 };
@@ skipping 343 matching lines @@
   profile_->GetPrefs()->ClearPref(sync_driver::prefs::kSyncHasSetupCompleted);
 
   EXPECT_CALL(observer_, OnStateChanged()).Times(AnyNumber());
   sync_->Initialize();
 
   sync_->SetSetupInProgress(true);
   IssueTestTokens();
   sync_->SetSetupInProgress(false);
   EXPECT_FALSE(sync_->sync_initialized());
 }