[mus+ash] Removes WmWindow from ash/wm/screen_pinning_controller.h

ash/accelerators/accelerator_commands_aura.cc

 // Copyright 2013 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/accelerators/accelerator_commands_aura.h"
 
 #include "ash/shell.h"
 #include "ash/wm/screen_pinning_controller.h"
 #include "ash/wm/window_state.h"
-#include "ash/wm_window.h"
 #include "base/metrics/user_metrics.h"
 #include "ui/display/manager/display_manager.h"
 #include "ui/display/manager/managed_display_info.h"
 
 namespace ash {
 namespace accelerators {
 
 void ToggleTouchHudProjection() {
   base::RecordAction(base::UserMetricsAction("Accel_Touch_Hud_Clear"));
   bool enabled = Shell::Get()->is_touch_hud_projection_enabled();
@@ skipping 16 matching lines @@
   return display_manager->ZoomInternalDisplay(up);
 }
 
 void ResetInternalDisplayZoom() {
   base::RecordAction(base::UserMetricsAction("Accel_Scale_Ui_Reset"));
   display::DisplayManager* display_manager = Shell::Get()->display_manager();
   display_manager->ResetInternalDisplayZoom();
 }
 
 void Unpin() {
-  WmWindow* pinned_window =
+  aura::Window* pinned_window =
       Shell::Get()->screen_pinning_controller()->pinned_window();
   if (pinned_window)
-    pinned_window->GetWindowState()->Restore();
+    wm::GetWindowState(pinned_window)->Restore();
 }
 
 }  // namespace accelerators
 }  // namespace ash