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

ash/accelerators/accelerator_commands_aura.cc

Index: ash/accelerators/accelerator_commands_aura.cc
diff --git a/ash/accelerators/accelerator_commands_aura.cc b/ash/accelerators/accelerator_commands_aura.cc
index d8f39d21fa98695bc38bb962d211bf67827ade9d..ed79a48d75b1fe057033119911d449d46fa76e77 100644
--- a/ash/accelerators/accelerator_commands_aura.cc
+++ b/ash/accelerators/accelerator_commands_aura.cc
@@ -7,7 +7,6 @@
 #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"
@@ -44,10 +43,10 @@ void 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