Move more from WmShell to Shell

ash/common/system/chromeos/power/dual_role_notification.cc

Index: ash/common/system/chromeos/power/dual_role_notification.cc
diff --git a/ash/common/system/chromeos/power/dual_role_notification.cc b/ash/common/system/chromeos/power/dual_role_notification.cc
index 7baaaa5700416c948916766a0472873d29f10714..8a0463c2f7538cbe95952cf4f8e783a158cfd80d 100644
--- a/ash/common/system/chromeos/power/dual_role_notification.cc
+++ b/ash/common/system/chromeos/power/dual_role_notification.cc
@@ -9,8 +9,8 @@
 #include "ash/common/system/chromeos/power/power_status.h"
 #include "ash/common/system/system_notifier.h"
 #include "ash/common/system/tray/system_tray_controller.h"
-#include "ash/common/wm_shell.h"
 #include "ash/resources/grit/ash_resources.h"
+#include "ash/shell.h"
 #include "ash/strings/grit/ash_strings.h"
 #include "base/strings/utf_string_conversions.h"
 #include "ui/base/l10n/l10n_util.h"
@@ -37,7 +37,7 @@ class DualRoleNotificationDelegate
 
   // Overridden from message_center::NotificationDelegate.
   void Click() override {
-    WmShell::Get()->system_tray_controller()->ShowPowerSettings();
+    Shell::Get()->system_tray_controller()->ShowPowerSettings();
   }
 
  private: