Revert "Remove aura and make a pure mojo::View version of the aura::Window FocusController."

mojo/services/window_manager/view_target.h

-// Copyright 2014 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 MOJO_SERVICES_WINDOW_MANAGER_VIEW_TARGET_H_
-#define MOJO_SERVICES_WINDOW_MANAGER_VIEW_TARGET_H_
-
-#include "ui/events/event_target.h"
-
-namespace ui {
-class EventTargeter;
-}
-
-namespace mojo {
-
-class View;
-class ViewTargeter;
-class WindowManagerApp;
-
-// A wrapper class around mojo::View. We maintain a shadow tree of ViewTargets,
-// which mirrors the main View tree. The ViewTarget tree wraps mojo::View
-// because we can't subclass View to implement the event targeting interfaces.
-class ViewTarget : public ui::EventTarget {
- public:
-  ViewTarget(WindowManagerApp* app, View* view_to_wrap);
-  ~ViewTarget() override;
-
-  View* view() { return view_; }
-
-  bool HasParent() const;
-  bool IsVisible() const;
-
-  // We keep track of our children here.
-  void AddChild(ViewTarget* view);
-
-  // Sets a new ViewTargeter for the view, and returns the previous
-  // ViewTargeter.
-  scoped_ptr<ViewTargeter> SetEventTargeter(scoped_ptr<ViewTargeter> targeter);
-
-  // Overridden from ui::EventTarget:
-  bool CanAcceptEvent(const ui::Event& event) override;
-  EventTarget* GetParentTarget() override;
-  scoped_ptr<ui::EventTargetIterator> GetChildIterator() const override;
-  ui::EventTargeter* GetEventTargeter() override;
-  void ConvertEventToTarget(ui::EventTarget* target,
-                            ui::LocatedEvent* event) override;
-
- private:
-  // The WindowManagerApp which owns us.
-  WindowManagerApp* app_;
-
-  // The mojo::View that we dispatch to.
-  View* view_;
-
-  std::vector<ViewTarget*> children_;
-
-  scoped_ptr<ViewTargeter> targeter_;
-
-  DISALLOW_COPY_AND_ASSIGN(ViewTarget);
-};
-
-}  // namespace mojo
-
-#endif  // MOJO_SERVICES_WINDOW_MANAGER_VIEW_TARGET_H_