mash: Convert ash::ShellDelegate from aura::Window to WmWindow

ash/shell/shell_delegate_impl.cc

Index: ash/shell/shell_delegate_impl.cc
diff --git a/ash/shell/shell_delegate_impl.cc b/ash/shell/shell_delegate_impl.cc
index 9651040bc648b1dceb6cc033ea0c0fb98e5fc35f..6d1d47b03426cfad3397df4e05807424d4aea258 100644
--- a/ash/shell/shell_delegate_impl.cc
+++ b/ash/shell/shell_delegate_impl.cc
@@ -17,6 +17,7 @@
 #include "ash/media_delegate.h"
 #include "ash/new_window_delegate.h"
 #include "ash/pointer_watcher_delegate_aura.h"
+#include "ash/shell.h"
 #include "ash/shell/context_menu.h"
 #include "ash/shell/example_factory.h"
 #include "ash/shell/shelf_delegate_impl.h"
@@ -184,7 +185,7 @@ bool ShellDelegateImpl::IsRunningInForcedAppMode() const {
   return false;
 }
 
-bool ShellDelegateImpl::CanShowWindowForUser(aura::Window* window) const {
+bool ShellDelegateImpl::CanShowWindowForUser(WmWindow* window) const {
   return true;
 }