cros: Replace WizardController string constants with OobeScreen values.

chrome/browser/chromeos/login/screens/network_screen_browsertest.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 "chrome/browser/chromeos/login/screens/network_screen.h"
 
 #include <memory>
 
 #include "base/command_line.h"
 #include "base/macros.h"
@@ skipping 35 matching lines @@
  public:
   MOCK_CONST_METHOD0(GetCurrentNetworkName, base::string16(void));
   MOCK_CONST_METHOD0(IsConnected, bool(void));
   MOCK_CONST_METHOD0(IsConnecting, bool(void));
 };
 
 }  // namespace login
 
 class NetworkScreenTest : public WizardInProcessBrowserTest {
  public:
-  NetworkScreenTest(): WizardInProcessBrowserTest("network"),
-                       fake_session_manager_client_(NULL) {
-  }
+  NetworkScreenTest()
+      : WizardInProcessBrowserTest(OobeScreen::SCREEN_OOBE_NETWORK),
+        fake_session_manager_client_(nullptr) {}
 
  protected:
   void SetUpInProcessBrowserTestFixture() override {
     WizardInProcessBrowserTest::SetUpInProcessBrowserTestFixture();
 
     fake_session_manager_client_ = new FakeSessionManagerClient;
     DBusThreadManager::GetSetterForTesting()->SetSessionManagerClient(
         std::unique_ptr<SessionManagerClient>(fake_session_manager_client_));
   }
 
   void SetUpOnMainThread() override {
     WizardInProcessBrowserTest::SetUpOnMainThread();
     mock_base_screen_delegate_.reset(new MockBaseScreenDelegate());
-    ASSERT_TRUE(WizardController::default_controller() != NULL);
+    ASSERT_TRUE(WizardController::default_controller() != nullptr);
     network_screen_ =
         NetworkScreen::Get(WizardController::default_controller());
-    ASSERT_TRUE(network_screen_ != NULL);
+    ASSERT_TRUE(network_screen_ != nullptr);
     ASSERT_EQ(WizardController::default_controller()->current_screen(),
               network_screen_);
     network_screen_->base_screen_delegate_ = mock_base_screen_delegate_.get();
     ASSERT_TRUE(network_screen_->view_ != nullptr);
 
     mock_network_state_helper_ = new login::MockNetworkStateHelper;
     SetDefaultNetworkStateHelperExpectations();
     network_screen_->SetNetworkStateHelperForTest(mock_network_state_helper_);
   }
 
@@ skipping 145 matching lines @@
       "}"
       "SendReplyIfEnrollmentDone();",
       &done));
 
   // Reset the enrollment helper so there is no side effect with other tests.
   static_cast<EnrollmentScreen*>(wizard_controller->current_screen())
       ->enrollment_helper_.reset();
 }
 
 }  // namespace chromeos