Add ash SessionStateDelegate

ash/shell_unittest.cc

Index: ash/shell_unittest.cc
diff --git a/ash/shell_unittest.cc b/ash/shell_unittest.cc
index 039354f1edd1e2efbc361b384649d40866c8b187..70ca5c2eeda785c1e4381d6c02840e25b3109903 100644
--- a/ash/shell_unittest.cc
+++ b/ash/shell_unittest.cc
@@ -11,9 +11,9 @@
 #include "ash/desktop_background/desktop_background_widget_controller.h"
 #include "ash/launcher/launcher.h"
 #include "ash/root_window_controller.h"
+#include "ash/session_state_delegate.h"
 #include "ash/shelf/shelf_layout_manager.h"
 #include "ash/shelf/shelf_widget.h"
-#include "ash/shell_delegate.h"
 #include "ash/shell_window_ids.h"
 #include "ash/test/ash_test_base.h"
 #include "ash/wm/root_window_layout_manager.h"
@@ -219,7 +219,7 @@ TEST_F(ShellTest, CreateLockScreenModalWindow) {
   EXPECT_TRUE(GetDefaultContainer()->Contains(
                   widget->GetNativeWindow()->parent()));
 
-  Shell::GetInstance()->delegate()->LockScreen();
+  Shell::GetInstance()->session_state_delegate()->LockScreen();
   // Create a LockScreen window.
   views::Widget* lock_widget = CreateTestWindow(widget_params);
   ash::Shell::GetContainer(
@@ -264,10 +264,12 @@ TEST_F(ShellTest, CreateLockScreenModalWindow) {
 }
 
 TEST_F(ShellTest, IsScreenLocked) {
-  ash::Shell::GetInstance()->delegate()->LockScreen();
-  EXPECT_TRUE(Shell::GetInstance()->IsScreenLocked());
-  ash::Shell::GetInstance()->delegate()->UnlockScreen();
-  EXPECT_FALSE(Shell::GetInstance()->IsScreenLocked());
+  SessionStateDelegate* delegate =
+      Shell::GetInstance()->session_state_delegate();
+  delegate->LockScreen();
+  EXPECT_TRUE(delegate->IsScreenLocked());
+  delegate->UnlockScreen();
+  EXPECT_FALSE(delegate->IsScreenLocked());
 }
 
 // Fails on Mac, see http://crbug.com/115662