Example of usage of new features of context and screen.

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 35741aad44083e8b7a19e58d9a4d84b9d2501476..236330c924425aeeb01209158cb7bfdfa25d6cb6 100644
--- a/chrome/browser/chromeos/login/wizard_controller.h
+++ b/chrome/browser/chromeos/login/wizard_controller.h
@@ -31,6 +31,7 @@ class DictionaryValue;
 namespace chromeos {
 
 class AutoEnrollmentCheckScreen;
+class ControllerPairingScreen;
 class EnrollmentScreen;
 class ErrorScreen;
 class EulaScreen;
@@ -128,8 +129,9 @@ class WizardController : public ScreenObserver {
   TermsOfServiceScreen* GetTermsOfServiceScreen();
   WrongHWIDScreen* GetWrongHWIDScreen();
   AutoEnrollmentCheckScreen* GetAutoEnrollmentCheckScreen();
-  HIDDetectionScreen* GetHIDDetectionScreen();
   LocallyManagedUserCreationScreen* GetLocallyManagedUserCreationScreen();
+  HIDDetectionScreen* GetHIDDetectionScreen();
+  ControllerPairingScreen* GetControllerPairingScreen();
 
   // Returns a pointer to the current screen or NULL if there's no such
   // screen.
@@ -155,7 +157,8 @@ class WizardController : public ScreenObserver {
   static const char kWrongHWIDScreenName[];
   static const char kLocallyManagedUserCreationScreenName[];
   static const char kAppLaunchSplashScreenName[];
-  static const char kHIDDetectionScreenName [];
+  static const char kHIDDetectionScreenName[];
+  static const char kControllerPairingScreenName[];
 
   // Volume percent at which spoken feedback is still audible.
   static const int kMinAudibleOutputVolumePercent;
@@ -175,6 +178,7 @@ class WizardController : public ScreenObserver {
   void ShowAutoEnrollmentCheckScreen();
   void ShowLocallyManagedUserCreationScreen();
   void ShowHIDDetectionScreen();
+  void ShowControllerPairingScreen();
 
   // Shows images login screen.
   void ShowLoginScreen(const LoginScreenContext& context);
@@ -203,6 +207,7 @@ class WizardController : public ScreenObserver {
   void OnOOBECompleted();
   void OnTermsOfServiceDeclined();
   void OnTermsOfServiceAccepted();
+  void OnControllerPairingFinished();
 
   // Loads brand code on I/O enabled thread and stores to Local State.
   void LoadBrandCodeFromFile();
@@ -310,6 +315,7 @@ class WizardController : public ScreenObserver {
   scoped_ptr<LocallyManagedUserCreationScreen>
       locally_managed_user_creation_screen_;
   scoped_ptr<HIDDetectionScreen> hid_detection_screen_;
+  scoped_ptr<ControllerPairingScreen> controller_pairing_screen_;
 
   // Screen that's currently active.
   WizardScreen* current_screen_;