PART1: Initiated the SignedSettings refactoring.

chrome/browser/chromeos/login/existing_user_controller.h

Index: chrome/browser/chromeos/login/existing_user_controller.h
diff --git a/chrome/browser/chromeos/login/existing_user_controller.h b/chrome/browser/chromeos/login/existing_user_controller.h
index efb8ae94c9989c7cc3792c132dd090c637d3ece4..d5949c647abbd8614631e539cbcaed1787c2b244 100644
--- a/chrome/browser/chromeos/login/existing_user_controller.h
+++ b/chrome/browser/chromeos/login/existing_user_controller.h
@@ -10,6 +10,7 @@
 
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
+#include "base/memory/weak_ptr.h"
 #include "base/string16.h"
 #include "base/task.h"
 #include "base/timer.h"
@@ -30,7 +31,7 @@
 namespace chromeos {
 
 class LoginDisplayHost;
-class UserCrosSettingsProvider;
+class CrosSettings;
 
 // ExistingUserController is used to handle login when someone has
 // already logged into the machine.
@@ -176,7 +177,7 @@ class ExistingUserController : public LoginDisplay::Delegate,
   static ExistingUserController* current_controller_;
 
   // Triggers prefetching of user settings.
-  scoped_ptr<UserCrosSettingsProvider> user_settings_;
+  CrosSettings* user_settings_;
 
   // URL to append to start Guest mode with.
   GURL guest_mode_url_;
@@ -185,7 +186,7 @@ class ExistingUserController : public LoginDisplay::Delegate,
   NotificationRegistrar registrar_;
 
   // Factory of callbacks.
-  ScopedRunnableMethodFactory<ExistingUserController> method_factory_;
+  base::WeakPtrFactory<ExistingUserController> pointer_factory_;
 
   // Whether everything is ready to launch the browser.
   bool ready_for_browser_launch_;