Find display root ServerWindow for located events in mus.

services/ui/ws/event_dispatcher.cc

Index: services/ui/ws/event_dispatcher.cc
diff --git a/services/ui/ws/event_dispatcher.cc b/services/ui/ws/event_dispatcher.cc
index d86edb2b44efee5357231e8ecd2d0cb327ef8143..d584fca994227a7ab66dead8f35e89c3da1121c1 100644
--- a/services/ui/ws/event_dispatcher.cc
+++ b/services/ui/ws/event_dispatcher.cc
@@ -320,7 +320,7 @@ void EventDispatcher::ProcessLocatedEvent(const ui::LocatedEvent& event) {
       event.IsMousePointerEvent() || event.IsMouseWheelEvent();
 
   if (is_mouse_event) {
-    mouse_pointer_last_location_ = event.location();
+    mouse_pointer_last_location_ = event.root_location();
     delegate_->OnMouseCursorLocationChanged(event.root_location());
   }
 
@@ -437,7 +437,7 @@ void EventDispatcher::UpdateTargetForPointer(int32_t pointer_id,
 EventDispatcher::PointerTarget EventDispatcher::PointerTargetForEvent(
     const ui::LocatedEvent& event) {
   PointerTarget pointer_target;
-  gfx::Point location(event.location());
+  gfx::Point location(event.root_location());
   ServerWindow* target_window = FindDeepestVisibleWindowForEvents(&location);
   pointer_target.window =
       modal_window_controller_.GetTargetForWindow(target_window);
@@ -538,7 +538,7 @@ Accelerator* EventDispatcher::FindAccelerator(
 
 ServerWindow* EventDispatcher::FindDeepestVisibleWindowForEvents(
     gfx::Point* location) {
-  ServerWindow* root = delegate_->GetRootWindowContaining(*location);
+  ServerWindow* root = delegate_->GetRootWindowContaining(location);
   if (!root)
     return nullptr;