ash: Use SessionController instead of SessionStateDelegate

ash/common/wm/maximize_mode/maximize_mode_event_handler.cc

Index: ash/common/wm/maximize_mode/maximize_mode_event_handler.cc
diff --git a/ash/common/wm/maximize_mode/maximize_mode_event_handler.cc b/ash/common/wm/maximize_mode/maximize_mode_event_handler.cc
index da7750604e366de378f9b0f94c10931b8bc9abde..49905c80f148de927c38046582d4c4ac32f88453 100644
--- a/ash/common/wm/maximize_mode/maximize_mode_event_handler.cc
+++ b/ash/common/wm/maximize_mode/maximize_mode_event_handler.cc
@@ -4,7 +4,7 @@
 
 #include "ash/common/wm/maximize_mode/maximize_mode_event_handler.h"
 
-#include "ash/common/session/session_state_delegate.h"
+#include "ash/common/session/session_controller.h"
 #include "ash/common/system/tray/system_tray_delegate.h"
 #include "ash/common/wm/window_state.h"
 #include "ash/common/wm/wm_event.h"
@@ -30,11 +30,10 @@ bool MaximizeModeEventHandler::ToggleFullscreen(const ui::TouchEvent& event) {
   if (event.type() != ui::ET_TOUCH_PRESSED)
     return false;
 
-  const SessionStateDelegate* delegate =
-      WmShell::Get()->GetSessionStateDelegate();
+  const SessionController* controller = WmShell::Get()->session_controller();
 
-  if (delegate->IsScreenLocked() ||
-      delegate->GetSessionState() != session_manager::SessionState::ACTIVE) {
+  if (controller->IsScreenLocked() ||
+      controller->GetSessionState() != session_manager::SessionState::ACTIVE) {
     return false;
   }