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

mojo/services/window_manager/view_event_dispatcher.cc

-// 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.
-
-#include "mojo/services/window_manager/view_event_dispatcher.h"
-
-#include "mojo/services/window_manager/view_target.h"
-
-namespace mojo {
-
-ViewEventDispatcher::ViewEventDispatcher()
-    : event_dispatch_target_(nullptr),
-      old_dispatch_target_(nullptr) {
-}
-
-ViewEventDispatcher::~ViewEventDispatcher() {}
-
-void ViewEventDispatcher::SetRootViewTarget(ViewTarget* root_view_target) {
-  root_view_target_.reset(root_view_target);
-}
-
-ui::EventTarget* ViewEventDispatcher::GetRootTarget() {
-  return root_view_target_.get();
-}
-
-void ViewEventDispatcher::OnEventProcessingStarted(ui::Event* event) {
-  // TODO(erg): In the aura version of this class, we perform a DIP based
-  // transformation here. Do we want to do any sort of analogous transformation
-  // here.
-}
-
-bool ViewEventDispatcher::CanDispatchToTarget(ui::EventTarget* target) {
-  return event_dispatch_target_ == target;
-}
-
-ui::EventDispatchDetails ViewEventDispatcher::PreDispatchEvent(
-    ui::EventTarget* target,
-    ui::Event* event) {
-  // TODO(erg): PreDispatch in aura::WindowEventDispatcher does many, many
-  // things. It, and the functions split off for different event types, are
-  // most of the file.
-  old_dispatch_target_ = event_dispatch_target_;
-  event_dispatch_target_ = static_cast<ViewTarget*>(target);
-  return ui::EventDispatchDetails();
-}
-
-ui::EventDispatchDetails ViewEventDispatcher::PostDispatchEvent(
-    ui::EventTarget* target,
-    const ui::Event& event) {
-  // TODO(erg): Not at all as long as PreDispatchEvent, but still missing core
-  // details.
-  event_dispatch_target_ = old_dispatch_target_;
-  old_dispatch_target_ = nullptr;
-  return ui::EventDispatchDetails();
-}
-
-}  // namespace mojo