Revert of mus: Fix event transformation in client code.

ui/aura/window_event_dispatcher.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 UI_AURA_WINDOW_EVENT_DISPATCHER_H_
 #define UI_AURA_WINDOW_EVENT_DISPATCHER_H_
 
 #include <stdint.h>
 
 #include <memory>
@@ skipping 47 matching lines @@
 //             event dispatch.
 class AURA_EXPORT WindowEventDispatcher : public ui::EventProcessor,
                                           public ui::GestureEventHelper,
                                           public client::CaptureDelegate,
                                           public WindowObserver,
                                           public EnvObserver {
  public:
   explicit WindowEventDispatcher(WindowTreeHost* host);
   ~WindowEventDispatcher() override;
 
+  void set_transform_events(bool value) { transform_events_ = value; }
+
   Window* mouse_pressed_handler() { return mouse_pressed_handler_; }
   Window* mouse_moved_handler() { return mouse_moved_handler_; }
 
   // Repost event for re-processing. Used when exiting context menus.
   // We support the ET_MOUSE_PRESSED, ET_TOUCH_PRESSED and ET_GESTURE_TAP_DOWN
   // event types (although the latter is currently a no-op).
   void RepostEvent(const ui::LocatedEvent* event);
 
   // Invoked when the mouse events get enabled or disabled.
   void OnMouseEventsEnableStateChanged(bool enabled);
@@ skipping 184 matching lines @@
   std::unique_ptr<ui::LocatedEvent> held_move_event_;
 
   // Allowing for reposting of events. Used when exiting context menus.
   std::unique_ptr<ui::LocatedEvent> held_repostable_event_;
 
   // Set when dispatching a held event.
   ui::LocatedEvent* dispatching_held_event_;
 
   ScopedObserver<aura::Window, aura::WindowObserver> observer_manager_;
 
+  bool transform_events_;
+
   // Used to schedule reposting an event.
   base::WeakPtrFactory<WindowEventDispatcher> repost_event_factory_;
 
   // Used to schedule DispatchHeldEvents() when |move_hold_count_| goes to 0.
   base::WeakPtrFactory<WindowEventDispatcher> held_event_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(WindowEventDispatcher);
 };
 
 }  // namespace aura
 
 #endif  // UI_AURA_WINDOW_EVENT_DISPATCHER_H_