Clean up when Chrome is terminated and WizardController is in charge of the message loop.

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 2d1e5a16b357c06c6bc34d8bf6e0fc79a4d6a547..38380d632a0ea72332310db50257d83aa3830169 100644
--- a/chrome/browser/chromeos/login/wizard_controller.h
+++ b/chrome/browser/chromeos/login/wizard_controller.h
@@ -13,6 +13,8 @@
 #include "chrome/browser/chromeos/login/screen_observer.h"
 #include "chrome/browser/chromeos/login/view_screen.h"
 #include "chrome/browser/chromeos/login/wizard_screen.h"
+#include "chrome/common/notification_observer.h"
+#include "chrome/common/notification_registrar.h"
 #include "gfx/rect.h"
 #include "googleurl/src/gurl.h"
 #include "testing/gtest/include/gtest/gtest_prod.h"
@@ -48,7 +50,8 @@ class WidgetGtk;
 // Class that manages control flow between wizard screens. Wizard controller
 // interacts with screen controllers to move the user between screens.
 class WizardController : public chromeos::ScreenObserver,
-                         public WizardScreenDelegate {
+                         public WizardScreenDelegate,
+                         public NotificationObserver {
  public:
   WizardController();
   ~WizardController();
@@ -159,6 +162,11 @@ class WizardController : public chromeos::ScreenObserver,
   static const char kEulaScreenName[];
   static const char kHTMLPageScreenName[];
 
+  // NotificationObserver implementation:
+  virtual void Observe(NotificationType type,
+                       const NotificationSource& source,
+                       const NotificationDetails& details);
+
  private:
   // Exit handlers:
   void OnLoginSignInSelected();
@@ -268,6 +276,8 @@ class WizardController : public chromeos::ScreenObserver,
   // URL to open on browser launch.
   GURL start_url_;
 
+  NotificationRegistrar registrar_;
+
   FRIEND_TEST_ALL_PREFIXES(WizardControllerFlowTest, ControlFlowErrorNetwork);
   FRIEND_TEST_ALL_PREFIXES(WizardControllerFlowTest, ControlFlowErrorUpdate);
   FRIEND_TEST_ALL_PREFIXES(WizardControllerFlowTest, ControlFlowEulaDeclined);