Remove mojo::Map.

services/ui/ws/window_manager_state.h

Index: services/ui/ws/window_manager_state.h
diff --git a/services/ui/ws/window_manager_state.h b/services/ui/ws/window_manager_state.h
index c063628a7eeb7523063977efb2210f3051e63c2a..a4c004294a5ee38e5395333e6b48e2c3bd253d22 100644
--- a/services/ui/ws/window_manager_state.h
+++ b/services/ui/ws/window_manager_state.h
@@ -68,7 +68,7 @@ class WindowManagerState : public EventDispatcherDelegate,
       DragSource* drag_source,
       ServerWindow* window,
       DragTargetConnection* source_connection,
-      mojo::Map<mojo::String, mojo::Array<uint8_t>> drag_data,
+      std::unordered_map<std::string, std::vector<uint8_t>> drag_data,
       uint32_t drag_operation);
   void CancelDragDrop();
   void EndDragDrop();