Revert 194578 "Add ash SessionStateDelegate"

trunk/src/ash/wm/window_cycle_controller.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ash/wm/window_cycle_controller.h"
 
 #include <algorithm>
 
-#include "ash/session_state_delegate.h"
-#include "ash/shell.h"
+#include "ash/shell_delegate.h"
 #include "ash/shell_window_ids.h"
 #include "ash/wm/activation_controller.h"
 #include "ash/wm/window_cycle_list.h"
 #include "ash/wm/window_util.h"
 #include "ash/wm/workspace_controller.h"
 #include "ui/aura/root_window.h"
 #include "ui/base/events/event.h"
 #include "ui/base/events/event_handler.h"
 
 namespace ash {
@@ skipping 94 matching lines @@
   }
 
   activation_client_->RemoveObserver(this);
   StopCycling();
 }
 
 // static
 bool WindowCycleController::CanCycle() {
   // Don't allow window cycling if the screen is locked or a modal dialog is
   // open.
-  return !Shell::GetInstance()->session_state_delegate()->IsScreenLocked() &&
+  return !Shell::GetInstance()->IsScreenLocked() &&
          !Shell::GetInstance()->IsSystemModalWindowOpen();
 }
 
 void WindowCycleController::HandleCycleWindow(Direction direction,
                                               bool is_alt_down) {
   if (!CanCycle())
     return;
 
   if (is_alt_down) {
     if (!IsCycling()) {
@@ skipping 160 matching lines @@
   mru_windows_.remove(window);
   if (window->id() == internal::kShellWindowId_WorkspaceContainer)
     window->RemoveObserver(this);
 }
 
 void WindowCycleController::OnWindowDestroying(aura::Window* window) {
   window->RemoveObserver(this);
 }
 
 }  // namespace ash