exo: Run exo in mus+ash

components/exo/wm_helper_mus.h

+// 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 COMPONENTS_EXO_WM_HELPER_MUS_H_
+#define COMPONENTS_EXO_WM_HELPER_MUS_H_
+
+#include "base/macros.h"
+#include "components/exo/wm_helper.h"
+
+namespace exo {
+
+// A helper class for accessing WindowManager related features.
+class WMHelperMus : public WMHelper {
+ public:
+  WMHelperMus();
+  ~WMHelperMus() override;
+
+  // Overriden from WMHelper:
+  const ash::DisplayInfo GetDisplayInfo(int64_t display_id) const override;
+  aura::Window* GetContainer(int container_id) override;
+  aura::Window* GetActiveWindow() const override;
+  aura::Window* GetFocusedWindow() const override;
+  ui::CursorSetType GetCursorSet() const override;
+  void AddPreTargetHandler(ui::EventHandler* handler) override;
+  void PrependPreTargetHandler(ui::EventHandler* handler) override;
+  void RemovePreTargetHandler(ui::EventHandler* handler) override;
+  void AddPostTargetHandler(ui::EventHandler* handler) override;
+  void RemovePostTargetHandler(ui::EventHandler* handler) override;
+  bool IsMaximizeModeWindowManagerEnabled() const override;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(WMHelperMus);
+};
+
+}  // namespace exo
+
+#endif  // COMPONENTS_EXO_WM_HELPER_H_