Revert of ash/mash: Add a mus-client that sets up ash to provide the system ui for mash.

ash/mus/shell_delegate_mus.h

Index: ash/mus/shell_delegate_mus.h
diff --git a/ash/mus/shell_delegate_mus.h b/ash/mus/shell_delegate_mus.h
deleted file mode 100644
index a9ca638c535776853661d4a2a4dde0752326a47f..0000000000000000000000000000000000000000
--- a/ash/mus/shell_delegate_mus.h
+++ /dev/null
@@ -1,63 +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_SHELL_DELEGATE_MUS_H_
-#define ASH_MUS_SHELL_DELEGATE_MUS_H_
-
-#include <string>
-
-#include "ash/shell_delegate.h"
-#include "base/compiler_specific.h"
-#include "base/macros.h"
-
-namespace keyboard {
-class KeyboardUI;
-}
-
-namespace ash {
-namespace sysui {
-
-class ShellDelegateMus : public ash::ShellDelegate {
- public:
-  ShellDelegateMus();
-  ~ShellDelegateMus() override;
-
-  bool IsFirstRunAfterBoot() const override;
-  bool IsIncognitoAllowed() const override;
-  bool IsMultiProfilesEnabled() const override;
-  bool IsRunningInForcedAppMode() const override;
-  bool CanShowWindowForUser(aura::Window* window) const override;
-  bool IsForceMaximizeOnFirstRun() const override;
-  void PreInit() override;
-  void PreShutdown() override;
-  void Exit() override;
-  keyboard::KeyboardUI* CreateKeyboardUI() override;
-  void VirtualKeyboardActivated(bool activated) override;
-  void AddVirtualKeyboardStateObserver(
-      VirtualKeyboardStateObserver* observer) override;
-  void RemoveVirtualKeyboardStateObserver(
-      VirtualKeyboardStateObserver* observer) override;
-  app_list::AppListViewDelegate* GetAppListViewDelegate() override;
-  ShelfDelegate* CreateShelfDelegate(ShelfModel* model) override;
-  ash::SystemTrayDelegate* CreateSystemTrayDelegate() override;
-  ash::UserWallpaperDelegate* CreateUserWallpaperDelegate() override;
-  ash::SessionStateDelegate* CreateSessionStateDelegate() override;
-  ash::AccessibilityDelegate* CreateAccessibilityDelegate() override;
-  ash::NewWindowDelegate* CreateNewWindowDelegate() override;
-  ash::MediaDelegate* CreateMediaDelegate() override;
-  ui::MenuModel* CreateContextMenu(aura::Window* root_window,
-                                   ash::ShelfItemDelegate* item_delegate,
-                                   ash::ShelfItem* item) override;
-  GPUSupport* CreateGPUSupport() override;
-  base::string16 GetProductName() const override;
-  gfx::Image GetDeprecatedAcceleratorImage() const override;
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(ShellDelegateMus);
-};
-
-}  // namespace sysui
-}  // namespace ash
-
-#endif  // ASH_MUS_SHELL_DELEGATE_MUS_H_