mash: Move directly linked NewWindowDelegate to mojom::NewWindowClient.

ash/mus/new_window_delegate_mus.h

Index: ash/mus/new_window_delegate_mus.h
diff --git a/ash/mus/new_window_delegate_mus.h b/ash/mus/new_window_delegate_mus.h
deleted file mode 100644
index 57dfb0223cefeb7520ae5cf5fb78465bac9ae736..0000000000000000000000000000000000000000
--- a/ash/mus/new_window_delegate_mus.h
+++ /dev/null
@@ -1,37 +0,0 @@
-// Copyright 2016 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.
-
-#ifndef ASH_MUS_NEW_WINDOW_DELEGATE_MUS_H_
-#define ASH_MUS_NEW_WINDOW_DELEGATE_MUS_H_
-
-#include "ash/common/new_window_delegate.h"
-#include "base/macros.h"
-
-namespace ash {
-namespace mus {
-
-class NewWindowDelegateMus : public NewWindowDelegate {
- public:
-  NewWindowDelegateMus();
-  ~NewWindowDelegateMus() override;
-
-  // NewWindowDelegate:
-  void NewTab() override;
-  void NewWindow(bool incognito) override;
-  void OpenFileManager() override;
-  void OpenCrosh() override;
-  void OpenGetHelp() override;
-  void RestoreTab() override;
-  void ShowKeyboardOverlay() override;
-  void ShowTaskManager() override;
-  void OpenFeedbackPage() override;
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(NewWindowDelegateMus);
-};
-
-}  // namespace mus
-}  // namespace ash
-
-#endif  // ASH_MUS_NEW_WINDOW_DELEGATE_MUS_H_