Replace direct access to kGoogleServicesUsername with calls to SigninManager.

chrome/browser/signin/signin_global_error_unittest.cc

 // 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.
 
 #include "chrome/browser/signin/signin_global_error.h"
 
 #include "base/memory/scoped_ptr.h"
 #include "base/prefs/pref_service.h"
 #include "chrome/browser/signin/fake_profile_oauth2_token_service.h"
 #include "chrome/browser/signin/fake_profile_oauth2_token_service_builder.h"
@@ skipping 18 matching lines @@
  public:
   void SetUp() override {
     // Create a signed-in profile.
     TestingProfile::Builder builder;
     builder.AddTestingFactory(ProfileOAuth2TokenServiceFactory::GetInstance(),
                               BuildFakeProfileOAuth2TokenService);
     builder.AddTestingFactory(SigninManagerFactory::GetInstance(),
                               FakeSigninManagerBase::Build);
     profile_ = builder.Build();
 
-    profile_->GetPrefs()->SetString(
-        prefs::kGoogleServicesUsername, kTestAccountId);
     SigninManagerFactory::GetForProfile(profile_.get())
         ->SetAuthenticatedUsername(kTestAccountId);
 
     global_error_ = SigninGlobalErrorFactory::GetForProfile(profile_.get());
     error_controller_ = ProfileOAuth2TokenServiceFactory::GetForProfile(
         profile_.get())->signin_error_controller();
   }
 
   content::TestBrowserThreadBundle thread_bundle_;
   scoped_ptr<TestingProfile> profile_;
@@ skipping 72 matching lines @@
 
     EXPECT_EQ(global_error_->HasMenuItem(), table[i].is_error);
     EXPECT_EQ(global_error_->MenuItemLabel().empty(), !table[i].is_error);
     EXPECT_EQ(global_error_->GetBubbleViewMessages().empty(),
               !table[i].is_error);
     EXPECT_FALSE(global_error_->GetBubbleViewTitle().empty());
     EXPECT_FALSE(global_error_->GetBubbleViewAcceptButtonLabel().empty());
     EXPECT_TRUE(global_error_->GetBubbleViewCancelButtonLabel().empty());
   }
 }