Update ui::PointerEvent to support mouse wheel and capture change events.

services/ui/ws/event_dispatcher.h

 // Copyright 2015 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 SERVICES_UI_WS_EVENT_DISPATCHER_H_
 #define SERVICES_UI_WS_EVENT_DISPATCHER_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 138 matching lines @@
 
   // EventDispatcher provides the following logic for pointer events:
   // . wheel events go to the current target of the associated pointer. If
   //   there is no target, they go to the deepest window.
   // . move (not drag) events go to the deepest window.
   // . when a pointer goes down all events until the corresponding up or
   //   cancel go to the deepest target. For mouse events the up only occurs
   //   when no buttons on the mouse are down.
   // This also generates exit events as appropriate. For example, if the mouse
   // moves between one window to another an exit is generated on the first.
-  void ProcessLocatedEvent(const ui::LocatedEvent& event);
+  void ProcessPointerEvent(const ui::PointerEvent& event);
 
   // Adds |pointer_target| to |pointer_targets_|.
   void StartTrackingPointer(int32_t pointer_id,
                             const PointerTarget& pointer_target);
 
   // Removes a PointerTarget from |pointer_targets_|.
   void StopTrackingPointer(int32_t pointer_id);
 
   // Starts tracking the pointer for |event|, or if already tracking the
   // pointer sends the appropriate event to the delegate and updates the
@@ skipping 74 matching lines @@
       AcceleratorMatchPhase::ANY;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(EventDispatcher);
 };
 
 }  // namespace ws
 }  // namespace ui
 
 #endif  // SERVICES_UI_WS_EVENT_DISPATCHER_H_