mus: Add UserActivityMonitor.

components/mus/ws/window_server.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_WINDOW_SERVER_H_
 #define COMPONENTS_MUS_WS_WINDOW_SERVER_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 16 matching lines @@
 #include "components/mus/ws/window_manager_window_tree_factory_set.h"
 #include "mojo/public/cpp/bindings/array.h"
 #include "mojo/public/cpp/bindings/binding.h"
 
 namespace mus {
 namespace ws {
 
 class AccessPolicy;
 class DisplayManager;
 class ServerWindow;
+class UserActivityMonitor;
 class WindowManagerState;
 class WindowServerDelegate;
 class WindowTree;
 class WindowTreeBinding;
 
 // WindowServer manages the set of clients of the window server (all the
 // WindowTrees) as well as providing the root of the hierarchy.
 class WindowServer : public ServerWindowDelegate,
                      public ServerWindowObserver,
                      public DisplayManagerDelegate {
@@ skipping 73 matching lines @@
 
   // Returns the WindowTree that has |id| as a root.
   WindowTree* GetTreeWithRoot(const ServerWindow* window) {
     return const_cast<WindowTree*>(
         const_cast<const WindowServer*>(this)->GetTreeWithRoot(window));
   }
   const WindowTree* GetTreeWithRoot(const ServerWindow* window) const;
 
   void OnFirstWindowManagerWindowTreeFactoryReady();
 
+  UserActivityMonitor* GetUserActivityMonitorForUser(const UserId& user_id);
+
   WindowManagerWindowTreeFactorySet* window_manager_window_tree_factory_set() {
     return &window_manager_window_tree_factory_set_;
   }
 
   // Sets focus to |window|. Returns true if |window| already has focus, or
   // focus was successfully changed. Returns |false| if |window| is not a valid
   // window to receive focus.
   bool SetFocusedWindow(ServerWindow* window);
   ServerWindow* GetFocusedWindow();
 
@@ skipping 177 matching lines @@
 
   WindowManagerWindowTreeFactorySet window_manager_window_tree_factory_set_;
 
   DISALLOW_COPY_AND_ASSIGN(WindowServer);
 };
 
 }  // namespace ws
 }  // namespace mus
 
 #endif  // COMPONENTS_MUS_WS_WINDOW_SERVER_H_