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

ash/pointer_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_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"
@@ skipping 26 matching lines @@
   }
 }
 
 void PointerWatcherDelegateAura::RemovePointerWatcher(
     views::PointerWatcher* watcher) {
   non_move_watchers_.RemoveObserver(watcher);
   move_watchers_.RemoveObserver(watcher);
 }
 
 void PointerWatcherDelegateAura::OnMouseEvent(ui::MouseEvent* event) {
-  if (event->type() == ui::ET_MOUSE_CAPTURE_CHANGED) {
-    FOR_EACH_OBSERVER(views::PointerWatcher, non_move_watchers_,
-                      OnMouseCaptureChanged());
-    FOR_EACH_OBSERVER(views::PointerWatcher, move_watchers_,
-                      OnMouseCaptureChanged());
-    return;
-  }
-
   // For compatibility with the mus version, don't send drags.
   if (event->type() != ui::ET_MOUSE_PRESSED &&
       event->type() != ui::ET_MOUSE_RELEASED &&
-      event->type() != ui::ET_MOUSE_MOVED)
+      event->type() != ui::ET_MOUSE_MOVED &&
+      event->type() != ui::ET_MOUSEWHEEL &&
+      event->type() != ui::ET_MOUSE_CAPTURE_CHANGED)
     return;
 
   DCHECK(ui::PointerEvent::CanConvertFrom(*event));
   NotifyWatchers(ui::PointerEvent(*event), *event);
 }
 
 void PointerWatcherDelegateAura::OnTouchEvent(ui::TouchEvent* event) {
   // For compatibility with the mus version, don't send drags.
   if (event->type() != ui::ET_TOUCH_PRESSED &&
       event->type() != ui::ET_TOUCH_RELEASED)
@@ skipping 27 matching lines @@
       views::PointerWatcher, move_watchers_,
       OnPointerEventObserved(event, screen_location, target_widget));
   if (event.type() != ui::ET_POINTER_MOVED) {
     FOR_EACH_OBSERVER(
         views::PointerWatcher, non_move_watchers_,
         OnPointerEventObserved(event, screen_location, target_widget));
   }
 }
 
 }  // namespace ash