Basic display management for mus

components/mus/ws/platform_screen.cc

Index: components/mus/ws/platform_screen.cc
diff --git a/components/mus/ws/user_id.h b/components/mus/ws/platform_screen.cc
similarity index 51%
copy from components/mus/ws/user_id.h
copy to components/mus/ws/platform_screen.cc
index dbb59965487763f62d675536f322006b30f173d3..2ae20228b7a247cb13b1f2461d2a37896be705e1 100644
--- a/components/mus/ws/user_id.h
+++ b/components/mus/ws/platform_screen.cc
@@ -2,21 +2,13 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef COMPONENTS_MUS_WS_USER_ID_H_
-#define COMPONENTS_MUS_WS_USER_ID_H_
-
-#include <string>
+#include "components/mus/ws/platform_screen.h"
 
 namespace mus {
 namespace ws {
 
-using UserId = std::string;
-
-inline UserId InvalidUserId() {
-  return std::string();
-}
+PlatformScreen::PlatformScreen() {}
+PlatformScreen::~PlatformScreen() {}
 
 }  // namespace ws
 }  // namespace mus
-
-#endif  // COMPONENTS_MUS_WS_USER_ID_H_