chromeos: converts observed pointer events to DIPs

ui/aura/mus/window_tree_client.h

Index: ui/aura/mus/window_tree_client.h
diff --git a/ui/aura/mus/window_tree_client.h b/ui/aura/mus/window_tree_client.h
index 09dc89bab29ccbacaefc2ba0ac59b57d560f5635..4640e87a4d1593f71353850674c3a49606dcd359 100644
--- a/ui/aura/mus/window_tree_client.h
+++ b/ui/aura/mus/window_tree_client.h
@@ -334,10 +334,12 @@ class AURA_EXPORT WindowTreeClient
       const base::Optional<std::vector<uint8_t>>& transport_data) override;
   void OnWindowInputEvent(uint32_t event_id,
                           Id window_id,
+                          int64_t display_id,
                           std::unique_ptr<ui::Event> event,
                           bool matches_pointer_watcher) override;
   void OnPointerEventObserved(std::unique_ptr<ui::Event> event,
-                              uint32_t window_id) override;
+                              uint32_t window_id,
+                              int64_t display_id) override;
   void OnWindowFocused(Id focused_window_id) override;
   void OnWindowPredefinedCursorChanged(Id window_id,
                                        ui::mojom::Cursor cursor) override;