Convert TrayEventFilter to wm common types

ash/container_delegate_aura.cc

-// 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.
-
-#include "ash/container_delegate_aura.h"
-
-#include "ash/common/shell_window_ids.h"
-#include "ash/root_window_controller.h"
-#include "ui/views/widget/widget.h"
-
-namespace ash {
-namespace {
-
-bool IsInContainer(views::Widget* widget, int container_id) {
-  aura::Window* window = widget->GetNativeWindow();
-  RootWindowController* root_controller =
-      GetRootWindowController(window->GetRootWindow());
-  if (!root_controller)
-    return false;
-  return root_controller->GetContainer(container_id)->Contains(window);
-}
-
-}  // namespace
-
-ContainerDelegateAura::ContainerDelegateAura() {}
-
-ContainerDelegateAura::~ContainerDelegateAura() {}
-
-bool ContainerDelegateAura::IsInMenuContainer(views::Widget* widget) {
-  return IsInContainer(widget, kShellWindowId_MenuContainer);
-}
-
-bool ContainerDelegateAura::IsInStatusContainer(views::Widget* widget) {
-  return IsInContainer(widget, kShellWindowId_StatusContainer);
-}
-
-}  // namespace ash