Revert of mus: Rename .*PointerWatcher.* to .*PointerDownWatcher.*.

ash/pointer_down_watcher_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/pointer_down_watcher_delegate_aura.h"
-
-#include "ash/shell.h"
-#include "ui/aura/client/screen_position_client.h"
-#include "ui/aura/window.h"
-#include "ui/events/event.h"
-#include "ui/events/event_constants.h"
-#include "ui/gfx/geometry/point.h"
-#include "ui/views/pointer_down_watcher.h"
-#include "ui/views/widget/widget.h"
-
-namespace ash {
-
-PointerDownWatcherDelegateAura::PointerDownWatcherDelegateAura() {
-  Shell::GetInstance()->AddPreTargetHandler(this);
-}
-
-PointerDownWatcherDelegateAura::~PointerDownWatcherDelegateAura() {
-  Shell::GetInstance()->RemovePreTargetHandler(this);
-}
-
-void PointerDownWatcherDelegateAura::AddPointerDownWatcher(
-    views::PointerDownWatcher* watcher) {
-  pointer_down_watchers_.AddObserver(watcher);
-}
-
-void PointerDownWatcherDelegateAura::RemovePointerDownWatcher(
-    views::PointerDownWatcher* watcher) {
-  pointer_down_watchers_.RemoveObserver(watcher);
-}
-
-void PointerDownWatcherDelegateAura::OnMouseEvent(ui::MouseEvent* event) {
-  if (event->type() == ui::ET_MOUSE_PRESSED)
-    FOR_EACH_OBSERVER(views::PointerDownWatcher, pointer_down_watchers_,
-                      OnMousePressed(*event, GetLocationInScreen(*event),
-                                     GetTargetWidget(*event)));
-}
-
-void PointerDownWatcherDelegateAura::OnTouchEvent(ui::TouchEvent* event) {
-  if (event->type() == ui::ET_TOUCH_PRESSED)
-    FOR_EACH_OBSERVER(views::PointerDownWatcher, pointer_down_watchers_,
-                      OnTouchPressed(*event, GetLocationInScreen(*event),
-                                     GetTargetWidget(*event)));
-}
-
-gfx::Point PointerDownWatcherDelegateAura::GetLocationInScreen(
-    const ui::LocatedEvent& event) const {
-  aura::Window* target = static_cast<aura::Window*>(event.target());
-  gfx::Point location_in_screen = event.location();
-  aura::client::GetScreenPositionClient(target->GetRootWindow())
-      ->ConvertPointToScreen(target, &location_in_screen);
-  return location_in_screen;
-}
-
-views::Widget* PointerDownWatcherDelegateAura::GetTargetWidget(
-    const ui::LocatedEvent& event) const {
-  aura::Window* window = static_cast<aura::Window*>(event.target());
-  return views::Widget::GetTopLevelWidgetForNativeView(window);
-}
-
-}  // namespace ash