ash: Use SessionController instead of SessionStateDelegate

ash/common/wm/system_modal_container_layout_manager.cc

Index: ash/common/wm/system_modal_container_layout_manager.cc
diff --git a/ash/common/wm/system_modal_container_layout_manager.cc b/ash/common/wm/system_modal_container_layout_manager.cc
index 2f21230de32bc0acd449fd0bdba732aacbf787ea..220a4d4a4cc7e27776e608b54fa676374b6b9149 100644
--- a/ash/common/wm/system_modal_container_layout_manager.cc
+++ b/ash/common/wm/system_modal_container_layout_manager.cc
@@ -6,7 +6,7 @@
 
 #include <cmath>
 
-#include "ash/common/session/session_state_delegate.h"
+#include "ash/common/session/session_controller.h"
 #include "ash/common/wm/window_dimmer.h"
 #include "ash/common/wm_shell.h"
 #include "ash/common/wm_window.h"
@@ -80,7 +80,7 @@ void SystemModalContainerLayoutManager::OnWindowAddedToLayout(WmWindow* child) {
   if (!WmShell::Get()->IsRunningInMash()) {
     DCHECK(container_->GetShellWindowId() !=
                kShellWindowId_LockSystemModalContainer ||
-           WmShell::Get()->GetSessionStateDelegate()->IsUserSessionBlocked());
+           WmShell::Get()->session_controller()->IsUserSessionBlocked());
   }
   // Since this is for SystemModal, there is no good reason to add windows
   // other than MODAL_TYPE_NONE or MODAL_TYPE_SYSTEM. DCHECK to avoid simple