Wire up inset of SetUnderlaySurfaceOffsetAndExtendedHitArea

components/mus/ws/server_window_surface_manager.cc

Index: components/mus/ws/server_window_surface_manager.cc
diff --git a/components/mus/ws/server_window_surface_manager.cc b/components/mus/ws/server_window_surface_manager.cc
index 61ad96efc6cfaabbc98b06dc608215476a1ef109..a17d5bf9bc161f6c2a17b9adb387dd3ec067ecca 100644
--- a/components/mus/ws/server_window_surface_manager.cc
+++ b/components/mus/ws/server_window_surface_manager.cc
@@ -39,6 +39,10 @@ ServerWindowSurface* ServerWindowSurfaceManager::GetSurfaceByType(
   return iter == type_to_surface_map_.end() ? nullptr : iter->second.get();
 }
 
+bool ServerWindowSurfaceManager::HasSurfaceOfType(mojom::SurfaceType type) {
+  return type_to_surface_map_.count(type) > 0;
+}
+
 cc::SurfaceId ServerWindowSurfaceManager::GenerateId() {
   return surface_id_allocator_.GenerateId();
 }