cros: Replace WizardController string constants with OobeScreen values.

chrome/browser/chromeos/login/wizard_controller.h

Index: chrome/browser/chromeos/login/wizard_controller.h
diff --git a/chrome/browser/chromeos/login/wizard_controller.h b/chrome/browser/chromeos/login/wizard_controller.h
index 645272514bf2e7433e7ff389638c54cf08cd8b9f..871aedb40d6b8d65a44be1a7b5cfd8989aaf79f0 100644
--- a/chrome/browser/chromeos/login/wizard_controller.h
+++ b/chrome/browser/chromeos/login/wizard_controller.h
@@ -89,7 +89,7 @@ class WizardController : public BaseScreenDelegate,
   static bool IsZeroDelayEnabled();
 
   // Checks whether screen show time should be tracked with UMA.
-  static bool IsOOBEStepToTrack(const std::string& screen_id);

[Alexander Alekseev, 2016/12/13 03:08:05]

Why not "screen_id" ?

[jdufault, 2016/12/13 22:30:27]

Done.

+  static bool IsOOBEStepToTrack(OobeScreen screen);
 
   // Skips any screens that may normally be shown after login (registration,
   // Terms of Service, user image selection).
@@ -97,10 +97,10 @@ class WizardController : public BaseScreenDelegate,
 
   // Shows the first screen defined by |first_screen_name| or by default
   // if the parameter is empty.
-  void Init(const std::string& first_screen_name);
+  void Init(OobeScreen first_screen_name);
 
-  // Advances to screen defined by |screen_name| and shows it.
-  void AdvanceToScreen(const std::string& screen_name);
+  // Advances to screen defined by |screen| and shows it.
+  void AdvanceToScreen(OobeScreen screen);
 
   // Advances to login screen. Should be used in for testing only.
   void SkipToLoginForTesting(const LoginScreenContext& context);
@@ -131,32 +131,8 @@ class WizardController : public BaseScreenDelegate,
   bool login_screen_started() const { return login_screen_started_; }
 
   // ScreenManager implementation.
-  BaseScreen* GetScreen(const std::string& screen_name) override;
-  BaseScreen* CreateScreen(const std::string& screen_name) override;
-
-  static const char kNetworkScreenName[];
-  static const char kLoginScreenName[];
-  static const char kUpdateScreenName[];
-  static const char kUserImageScreenName[];
-  static const char kOutOfBoxScreenName[];
-  static const char kTestNoScreenName[];
-  static const char kEulaScreenName[];
-  static const char kEnableDebuggingScreenName[];
-  static const char kEnrollmentScreenName[];
-  static const char kResetScreenName[];
-  static const char kKioskEnableScreenName[];
-  static const char kKioskAutolaunchScreenName[];
-  static const char kErrorScreenName[];
-  static const char kTermsOfServiceScreenName[];
-  static const char kArcTermsOfServiceScreenName[];
-  static const char kAutoEnrollmentCheckScreenName[];
-  static const char kWrongHWIDScreenName[];
-  static const char kSupervisedUserCreationScreenName[];
-  static const char kAppLaunchSplashScreenName[];
-  static const char kHIDDetectionScreenName[];
-  static const char kControllerPairingScreenName[];
-  static const char kHostPairingScreenName[];
-  static const char kDeviceDisabledScreenName[];
+  BaseScreen* GetScreen(OobeScreen screen) override;
+  BaseScreen* CreateScreen(OobeScreen screen) override;
 
   // Volume percent at which spoken feedback is still audible.
   static const int kMinAudibleOutputVolumePercent;
@@ -293,7 +269,7 @@ class WizardController : public BaseScreenDelegate,
     local_state_for_testing_ = local_state;
   }
 
-  std::string first_screen_name() { return first_screen_name_; }
+  OobeScreen first_screen_name() const { return first_screen_name_; }
 
   // Called when network is UP.
   void StartTimezoneResolve();
@@ -362,7 +338,8 @@ class WizardController : public BaseScreenDelegate,
   bool is_out_of_box_ = false;
 
   // Value of the screen name that WizardController was started with.
-  std::string first_screen_name_;
+  // TODO(jdufault): Rename to first_screen_
+  OobeScreen first_screen_name_;
 
   // OOBE/login display host.
   LoginDisplayHost* host_ = nullptr;
@@ -430,7 +407,7 @@ class WizardController : public BaseScreenDelegate,
   // Pairing controller for remora devices.
   std::unique_ptr<pairing_chromeos::HostPairingController> remora_controller_;
 
-  // Maps screen ids to last time of their shows.
+  // Maps screen names to last time of their shows.
   base::hash_map<std::string, base::Time> screen_show_times_;
 
   // Tests check result of timezone resolve.