More user id tracking for mus:

components/mus/ws/access_policy.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef COMPONENTS_MUS_WS_ACCESS_POLICY_H_
 #define COMPONENTS_MUS_WS_ACCESS_POLICY_H_
 
 #include <stdint.h>
 
 #include "components/mus/public/interfaces/mus_constants.mojom.h"
 #include "components/mus/public/interfaces/window_tree.mojom.h"
 #include "components/mus/ws/ids.h"
 
 namespace mus {
-
 namespace ws {
 
 class ServerWindow;
 
 // AccessPolicy is used by WindowTreeImpl to determine what a connection is
 // allowed to do.
 class AccessPolicy {
  public:
   virtual ~AccessPolicy() {}
 
@@ skipping 39 matching lines @@
       const ServerWindow** new_parent,
       const ServerWindow** old_parent) const = 0;
   virtual bool CanSetWindowManager() const = 0;
 
   // Returns the window to supply to the client when focus changes to |focused|.
   virtual const ServerWindow* GetWindowForFocusChange(
       const ServerWindow* focused) = 0;
 };
 
 }  // namespace ws
-
 }  // namespace mus
 
 #endif  // COMPONENTS_MUS_WS_ACCESS_POLICY_H_