Add ash SessionStateDelegate

ash/wm/window_cycle_controller_unittest.cc

Index: ash/wm/window_cycle_controller_unittest.cc
diff --git a/ash/wm/window_cycle_controller_unittest.cc b/ash/wm/window_cycle_controller_unittest.cc
index fabd9d92c1bf87626be90d0efad9e18f959ed44d..186e2bdf7d4ab3f796c512dc340ced22f0a7af45 100644
--- a/ash/wm/window_cycle_controller_unittest.cc
+++ b/ash/wm/window_cycle_controller_unittest.cc
@@ -8,6 +8,7 @@
 
 #include "ash/display/display_controller.h"
 #include "ash/display/display_manager.h"
+#include "ash/session_state_delegate.h"
 #include "ash/shell.h"
 #include "ash/shell_window_ids.h"
 #include "ash/test/ash_test_base.h"
@@ -145,14 +146,14 @@ TEST_F(WindowCycleControllerTest, HandleCycleWindow) {
   EXPECT_TRUE(wm::IsActiveWindow(window0.get()));
 
   // When the screen is locked, cycling window does not take effect.
-  Shell::GetInstance()->delegate()->LockScreen();
+  Shell::GetInstance()->session_state_delegate()->LockScreen();
   EXPECT_TRUE(wm::IsActiveWindow(window0.get()));
   controller->HandleCycleWindow(WindowCycleController::FORWARD, false);
   EXPECT_TRUE(wm::IsActiveWindow(window0.get()));
   controller->HandleCycleWindow(WindowCycleController::BACKWARD, false);
   EXPECT_TRUE(wm::IsActiveWindow(window0.get()));
 
-  Shell::GetInstance()->delegate()->UnlockScreen();
+  Shell::GetInstance()->session_state_delegate()->UnlockScreen();
   EXPECT_TRUE(wm::IsActiveWindow(window0.get()));
   controller->HandleCycleWindow(WindowCycleController::FORWARD, false);
   EXPECT_TRUE(wm::IsActiveWindow(window1.get()));