Add device policy to disallow shutdown - ash UI modifications

chrome/browser/chromeos/power/session_state_controller_delegate_chromeos.h

Index: chrome/browser/chromeos/power/session_state_controller_delegate_chromeos.h
diff --git a/chrome/browser/chromeos/power/session_state_controller_delegate_chromeos.h b/chrome/browser/chromeos/power/session_state_controller_delegate_chromeos.h
index e399f601f68fde20687b3d90e3e02f008625cdbf..2f8a9eafd25e3451bcbb503ffd51124ff4126fed 100644
--- a/chrome/browser/chromeos/power/session_state_controller_delegate_chromeos.h
+++ b/chrome/browser/chromeos/power/session_state_controller_delegate_chromeos.h
@@ -8,21 +8,23 @@
 #include "ash/wm/lock_state_controller.h"
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
+#include "base/memory/weak_ptr.h"
 
 namespace chromeos {
 
 class SessionStateControllerDelegateChromeos
     : public ash::LockStateControllerDelegate {
  public:
-  SessionStateControllerDelegateChromeos() {}
-  ~SessionStateControllerDelegateChromeos() override {}
+  SessionStateControllerDelegateChromeos();
+  ~SessionStateControllerDelegateChromeos() override;
 
  private:
   // SessionStateControllerDelegate implementation.
   void RequestLockScreen() override;
-  void RequestRestart() override;
   void RequestShutdown() override;
 
+  base::WeakPtrFactory<SessionStateControllerDelegateChromeos> weak_factory_;
+
   DISALLOW_COPY_AND_ASSIGN(SessionStateControllerDelegateChromeos);
 };