Delete mus surfaces hit testing

components/mus/ws/event_dispatcher.h

Index: components/mus/ws/event_dispatcher.h
diff --git a/components/mus/ws/event_dispatcher.h b/components/mus/ws/event_dispatcher.h
index ca7e6a6fc9fe09824f1245654df009958c25e055..cea8aad708ffc4c8143246420b0d92b8d54ab6b4 100644
--- a/components/mus/ws/event_dispatcher.h
+++ b/components/mus/ws/event_dispatcher.h
@@ -12,7 +12,6 @@
 #include <utility>
 
 #include "base/macros.h"
-#include "cc/surfaces/surface_id.h"
 #include "components/mus/public/interfaces/event_matcher.mojom.h"
 #include "components/mus/ws/modal_window_controller.h"
 #include "components/mus/ws/server_window_observer.h"
@@ -43,8 +42,6 @@ class EventDispatcher : public ServerWindowObserver {
 
   void set_root(ServerWindow* root) { root_ = root; }
 
-  void set_surface_id(cc::SurfaceId surface_id) { surface_id_ = surface_id; }
-
   // Cancels capture and stops tracking any pointer events. This does not send
   // any events to the delegate.
   void Reset();
@@ -207,8 +204,6 @@ class EventDispatcher : public ServerWindowObserver {
   // bounds of |mouse_cursor_source_window_|, which can capture the cursor.
   gfx::Point mouse_pointer_last_location_;
 
-  cc::SurfaceId surface_id_;
-
   using Entry = std::pair<uint32_t, std::unique_ptr<Accelerator>>;
   std::map<uint32_t, std::unique_ptr<Accelerator>> accelerators_;