Add ash SessionStateDelegate

chrome/browser/ui/ash/chrome_shell_delegate.cc

Index: chrome/browser/ui/ash/chrome_shell_delegate.cc
diff --git a/chrome/browser/ui/ash/chrome_shell_delegate.cc b/chrome/browser/ui/ash/chrome_shell_delegate.cc
index 2ecb35a51f9489c4e9cb5b5bb722b6241fc1ceae..1fd4f9a730939d58e589f4e6063005984ca858f6 100644
--- a/chrome/browser/ui/ash/chrome_shell_delegate.cc
+++ b/chrome/browser/ui/ash/chrome_shell_delegate.cc
@@ -8,6 +8,7 @@
 #include "ash/host/root_window_host_factory.h"
 #include "ash/launcher/launcher_types.h"
 #include "ash/magnifier/magnifier_constants.h"
+#include "ash/session_state_delegate.h"
 #include "ash/shelf/shelf_widget.h"
 #include "ash/system/tray/system_tray_delegate.h"
 #include "ash/wm/window_properties.h"
@@ -26,6 +27,7 @@
 #include "chrome/browser/ui/ash/ash_keyboard_controller_proxy.h"
 #include "chrome/browser/ui/ash/launcher/chrome_launcher_controller.h"
 #include "chrome/browser/ui/ash/launcher/launcher_context_menu.h"
+#include "chrome/browser/ui/ash/session_state_delegate.h"
 #include "chrome/browser/ui/ash/user_action_handler.h"
 #include "chrome/browser/ui/ash/window_positioner.h"
 #include "chrome/browser/ui/browser.h"
@@ -79,11 +81,6 @@ bool ChromeShellDelegate::IsRunningInForcedAppMode() const {
   return chrome::IsRunningInForcedAppMode();
 }
 
-void ChromeShellDelegate::UnlockScreen() {
-  // This is used only for testing thus far.
-  NOTIMPLEMENTED();
-}
-
 void ChromeShellDelegate::Exit() {
   chrome::AttemptUserExit();
 }
@@ -198,6 +195,10 @@ ash::LauncherDelegate* ChromeShellDelegate::CreateLauncherDelegate(
   return launcher_delegate_;
 }
 
+ash::SessionStateDelegate* ChromeShellDelegate::CreateSessionStateDelegate() {
+  return new SessionStateDelegate;
+}
+
 aura::client::UserActionClient* ChromeShellDelegate::CreateUserActionClient() {
   return new UserActionHandler;
 }