mus: Change PointerWatcher to observe all pointer events, with moves optional.

ash/pointer_watcher_delegate_aura.cc

Index: ash/pointer_watcher_delegate_aura.cc
diff --git a/ash/pointer_watcher_delegate_aura.cc b/ash/pointer_watcher_delegate_aura.cc
index d70720d5a1932395559a707fb2e3defc33ac896f..6fe12f6f6f6f6cd693cd50bdb9d53587d98ecbc9 100644
--- a/ash/pointer_watcher_delegate_aura.cc
+++ b/ash/pointer_watcher_delegate_aura.cc
@@ -34,17 +34,25 @@ void PointerWatcherDelegateAura::RemovePointerWatcher(
 }
 
 void PointerWatcherDelegateAura::OnMouseEvent(ui::MouseEvent* event) {
-  if (event->type() == ui::ET_MOUSE_PRESSED)
-    FOR_EACH_OBSERVER(views::PointerWatcher, pointer_watchers_,
-                      OnMousePressed(*event, GetLocationInScreen(*event),
-                                     GetTargetWidget(*event)));
+  // For compatibility with the mus version, don't send moves.
+  if (event->type() == ui::ET_MOUSE_MOVED)

[James Cook, 2016/08/02 21:19:50]

Now that I think about it more, these tests should probably be to allow only
ET_MOUSE_PRESSED and ET_MOUSE_RELEASED, rather than just blocking moves. That
better matches mus. Something like:

if (type != PRESSED && type != RELEASED)
  return;

[riajiang, 2016/08/02 22:01:41]

Done.

+    return;
+  ui::PointerEvent mouse_pointer_event(*event);
+  FOR_EACH_OBSERVER(
+      views::PointerWatcher, pointer_watchers_,
+      OnPointerEventObserved(mouse_pointer_event, GetLocationInScreen(*event),
+                             GetTargetWidget(*event)));
 }
 
 void PointerWatcherDelegateAura::OnTouchEvent(ui::TouchEvent* event) {
-  if (event->type() == ui::ET_TOUCH_PRESSED)
-    FOR_EACH_OBSERVER(views::PointerWatcher, pointer_watchers_,
-                      OnTouchPressed(*event, GetLocationInScreen(*event),
-                                     GetTargetWidget(*event)));
+  // For compatibility with the mus version, don't send moves.
+  if (event->type() == ui::ET_TOUCH_MOVED)

[James Cook, 2016/08/02 21:19:50]

ditto

[riajiang, 2016/08/02 22:01:40]

Done.

+    return;
+  ui::PointerEvent touch_pointer_event(*event);
+  FOR_EACH_OBSERVER(
+      views::PointerWatcher, pointer_watchers_,
+      OnPointerEventObserved(touch_pointer_event, GetLocationInScreen(*event),
+                             GetTargetWidget(*event)));
 }
 
 gfx::Point PointerWatcherDelegateAura::GetLocationInScreen(