Introduce SessionManager that will contain code to start user session on Chrome OS

chrome/browser/ui/webui/chromeos/login/reset_screen_handler.cc

Index: chrome/browser/ui/webui/chromeos/login/reset_screen_handler.cc
diff --git a/chrome/browser/ui/webui/chromeos/login/reset_screen_handler.cc b/chrome/browser/ui/webui/chromeos/login/reset_screen_handler.cc
index 5d8993237fb26085e6e06fd078bb70d5619fac42..da3063a1a34a435b87a48bf89005232e31881e24 100644
--- a/chrome/browser/ui/webui/chromeos/login/reset_screen_handler.cc
+++ b/chrome/browser/ui/webui/chromeos/login/reset_screen_handler.cc
@@ -14,6 +14,7 @@
 #include "base/files/file_path.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/metrics/histogram.h"
+#include "base/prefs/pref_registry_simple.h"
 #include "base/prefs/pref_service.h"
 #include "base/values.h"
 #include "chrome/browser/browser_process.h"
@@ -223,6 +224,12 @@ void ResetScreenHandler::OnRollbackCheck(bool can_rollback) {
   ShowWithParams();
 }
 
+// static
+void ResetScreenHandler::RegisterPrefs(PrefRegistrySimple* registry) {
+  registry->RegisterBooleanPref(prefs::kFactoryResetRequested, false);
+  registry->RegisterBooleanPref(prefs::kRollbackRequested, false);
+}
+
 void ResetScreenHandler::Initialize() {
   if (!page_is_ready() || !delegate_)
     return;