ash: Use SessionController instead of SessionStateDelegate

ash/common/wm/container_finder.cc

Index: ash/common/wm/container_finder.cc
diff --git a/ash/common/wm/container_finder.cc b/ash/common/wm/container_finder.cc
index 95207ec36931a2c615ba6555ee1a3292ab13685f..f55f29c9bcd7d5bed5d1b422f343f53065b68e90 100644
--- a/ash/common/wm/container_finder.cc
+++ b/ash/common/wm/container_finder.cc
@@ -4,7 +4,7 @@
 
 #include "ash/common/wm/container_finder.h"
 
-#include "ash/common/session/session_state_delegate.h"
+#include "ash/common/session/session_controller.h"
 #include "ash/common/wm/always_on_top_controller.h"
 #include "ash/common/wm/root_window_finder.h"
 #include "ash/common/wm/window_state.h"
@@ -39,7 +39,7 @@ WmWindow* GetSystemModalContainer(WmWindow* root, WmWindow* window) {
   // all modal windows are placed into the normal modal container.
   // In case of missing transient parent (it could happen for alerts from
   // background pages) assume that the window belongs to user session.
-  if (!window->GetShell()->GetSessionStateDelegate()->IsUserSessionBlocked() ||
+  if (!WmShell::Get()->session_controller()->IsUserSessionBlocked() ||
       !window->GetTransientParent()) {
     return root->GetChildByShellWindowId(kShellWindowId_SystemModalContainer);
   }