Rewrite std::string("") to std::string(), Linux edition.

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 "testing/gtest/include/gtest/gtest.h"
 
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop.h"
 #include "base/prefs/pref_service.h"
 #include "chrome/browser/signin/signin_manager.h"
@@ skipping 171 matching lines @@
   EXPECT_CALL(*data_type_manager, Configure(_, _)).Times(1);
   EXPECT_CALL(*data_type_manager, state()).
       WillOnce(Return(DataTypeManager::CONFIGURED)).
       WillOnce(Return(DataTypeManager::CONFIGURED));
   EXPECT_CALL(*data_type_manager, Stop()).Times(1);
   EXPECT_CALL(observer_, OnStateChanged()).Times(AnyNumber());
 
   // Create some tokens in the token service; the service will startup when
   // it is notified that tokens are available.
   sync_->SetSetupInProgress(true);
-  sync_->signin()->StartSignIn("test_user", "", "", "");
-  TokenServiceFactory::GetForProfile(profile_.get())->IssueAuthTokenForTest(
-      GaiaConstants::kSyncService, "sync_token");
+  sync_->signin()
+      ->StartSignIn("test_user", std::string(), std::string(), std::string());
+  TokenServiceFactory::GetForProfile(profile_.get())
+      ->IssueAuthTokenForTest(GaiaConstants::kSyncService, "sync_token");
   TokenServiceFactory::GetForProfile(profile_.get())->IssueAuthTokenForTest(
       GaiaConstants::kGaiaOAuth2LoginRefreshToken, "oauth2_login_token");
   sync_->SetSetupInProgress(false);
   EXPECT_TRUE(sync_->ShouldPushChanges());
 }
 
 ProfileKeyedService* BuildFakeTokenService(Profile* profile) {
   return new FakeTokenService();
 }
 
@@ skipping 23 matching lines @@
 
   // Then start things up.
   EXPECT_CALL(*data_type_manager, Configure(_, _)).Times(1);
   EXPECT_CALL(*data_type_manager, state()).
       WillOnce(Return(DataTypeManager::CONFIGURED)).
       WillOnce(Return(DataTypeManager::CONFIGURED));
   EXPECT_CALL(*data_type_manager, Stop()).Times(1);
   EXPECT_CALL(observer_, OnStateChanged()).Times(AnyNumber());
 
   sync_->SetSetupInProgress(true);
-  sync_->signin()->StartSignIn("test_user", "", "", "");
+  sync_->signin()
+      ->StartSignIn("test_user", std::string(), std::string(), std::string());
   // NOTE: Unlike StartFirstTime, this test does not issue any auth tokens.
   token_service->LoadTokensFromDB();
   sync_->SetSetupInProgress(false);
   // Backend should initialize using a bogus GAIA token for credentials.
   EXPECT_TRUE(sync_->ShouldPushChanges());
 }
 
 TEST_F(ProfileSyncServiceStartupTest, StartInvalidCredentials) {
   DataTypeManagerMock* data_type_manager = SetUpDataTypeManager();
   EXPECT_CALL(*data_type_manager, Configure(_, _)).Times(0);
@@ skipping 13 matching lines @@
   EXPECT_FALSE(sync_->ShouldPushChanges());
   Mock::VerifyAndClearExpectations(data_type_manager);
 
   // Update the credentials, unstalling the backend.
   EXPECT_CALL(*data_type_manager, Configure(_, _));
   EXPECT_CALL(*data_type_manager, state()).
       WillRepeatedly(Return(DataTypeManager::CONFIGURED));
   EXPECT_CALL(*data_type_manager, Stop()).Times(1);
   EXPECT_CALL(observer_, OnStateChanged()).Times(AnyNumber());
   sync_->SetSetupInProgress(true);
-  sync_->signin()->StartSignIn("test_user", "", "", "");
-  token_service->IssueAuthTokenForTest(
-      GaiaConstants::kSyncService, "sync_token");
+  sync_->signin()
+      ->StartSignIn("test_user", std::string(), std::string(), std::string());
+  token_service->IssueAuthTokenForTest(GaiaConstants::kSyncService,
+                                       "sync_token");
   sync_->SetSetupInProgress(false);
   MessageLoop::current()->Run();
 
   // Verify we successfully finish startup and configuration.
   EXPECT_TRUE(sync_->ShouldPushChanges());
 }
 
 TEST_F(ProfileSyncServiceStartupCrosTest, StartCrosNoCredentials) {
   EXPECT_CALL(*sync_->components_factory_mock(),
               CreateDataTypeManager(_, _, _, _, _)).Times(0);
@@ skipping 179 matching lines @@
 
   // Preload the tokens.
   TokenServiceFactory::GetForProfile(profile_.get())->IssueAuthTokenForTest(
       GaiaConstants::kSyncService, "sync_token");
   sync_->fail_initial_download();
 
   sync_->Initialize();
   EXPECT_FALSE(sync_->sync_initialized());
   EXPECT_FALSE(sync_->GetBackendForTest());
 }