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

ash/pointer_down_watcher_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.
 
 #include "ash/ash_export.h"
-#include "ash/common/pointer_watcher_delegate.h"
+#include "ash/common/pointer_down_watcher_delegate.h"
 #include "base/macros.h"
 #include "base/observer_list.h"
 #include "ui/events/event_handler.h"
 
 namespace gfx {
 class Point;
 }
 
 namespace ui {
 class LocatedEvent;
 }
 
 namespace views {
 class Widget;
 }
 
 namespace ash {
 
-// Support for PointerWatchers in non-mus ash, implemented with a pre-target
+// Support for PointerDownWatchers in non-mus ash, implemented with a pre-target
 // EventHandler on the Shell.
-class ASH_EXPORT PointerWatcherDelegateAura : public PointerWatcherDelegate,
-                                              public ui::EventHandler {
+class ASH_EXPORT PointerDownWatcherDelegateAura
+    : public PointerDownWatcherDelegate,
+      public ui::EventHandler {
  public:
-  PointerWatcherDelegateAura();
-  ~PointerWatcherDelegateAura() override;
+  PointerDownWatcherDelegateAura();
+  ~PointerDownWatcherDelegateAura() override;
 
-  // PointerWatcherDelegate:
-  void AddPointerWatcher(views::PointerWatcher* watcher) override;
-  void RemovePointerWatcher(views::PointerWatcher* watcher) override;
+  // PointerDownWatcherDelegate:
+  void AddPointerDownWatcher(views::PointerDownWatcher* watcher) override;
+  void RemovePointerDownWatcher(views::PointerDownWatcher* watcher) override;
 
   // ui::EventHandler:
   void OnMouseEvent(ui::MouseEvent* event) override;
   void OnTouchEvent(ui::TouchEvent* event) override;
 
  private:
   gfx::Point GetLocationInScreen(const ui::LocatedEvent& event) const;
   views::Widget* GetTargetWidget(const ui::LocatedEvent& event) const;
 
   // Must be empty on destruction.
-  base::ObserverList<views::PointerWatcher, true> pointer_watchers_;
+  base::ObserverList<views::PointerDownWatcher, true> pointer_down_watchers_;
 
-  DISALLOW_COPY_AND_ASSIGN(PointerWatcherDelegateAura);
+  DISALLOW_COPY_AND_ASSIGN(PointerDownWatcherDelegateAura);
 };
 
 }  // namespace ash