Convert TrayEventFilter to wm common types

ash/container_delegate_aura.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 ASH_CONTAINER_DELEGATE_AURA_H_
-#define ASH_CONTAINER_DELEGATE_AURA_H_
-
-#include "ash/ash_export.h"
-#include "ash/container_delegate.h"
-#include "base/macros.h"
-
-namespace views {
-class Widget;
-}
-
-namespace ash {
-
-// The ash::ContainerDelegate implementation for classic ash.
-class ASH_EXPORT ContainerDelegateAura : public ContainerDelegate {
- public:
-  ContainerDelegateAura();
-  ~ContainerDelegateAura() override;
-
-  // ContainerDelegate:
-  bool IsInMenuContainer(views::Widget* widget) override;
-  bool IsInStatusContainer(views::Widget* widget) override;
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(ContainerDelegateAura);
-};
-
-}  // namespace ash
-
-#endif  // ASH_CONTAINER_DELEGATE_AURA_H_