mus: Add UserActivityMonitor.

components/mus/ws/window_server.cc

 // 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.
 
 #include "components/mus/ws/window_server.h"
 
 #include <set>
 #include <string>
 
 #include "base/logging.h"
 #include "base/memory/ptr_util.h"
 #include "base/stl_util.h"
 #include "components/mus/public/cpp/surfaces/surfaces_type_converters.h"
 #include "components/mus/ws/display.h"
 #include "components/mus/ws/display_binding.h"
 #include "components/mus/ws/display_manager.h"
 #include "components/mus/ws/operation.h"
 #include "components/mus/ws/server_window.h"
+#include "components/mus/ws/user_activity_monitor.h"
 #include "components/mus/ws/window_coordinate_conversions.h"
 #include "components/mus/ws/window_manager_access_policy.h"
 #include "components/mus/ws/window_manager_display_root.h"
 #include "components/mus/ws/window_manager_state.h"
 #include "components/mus/ws/window_manager_window_tree_factory.h"
 #include "components/mus/ws/window_server_delegate.h"
 #include "components/mus/ws/window_tree.h"
 #include "components/mus/ws/window_tree_binding.h"
 #include "services/shell/public/cpp/connection.h"
 #include "ui/gfx/geometry/size_conversions.h"
@@ skipping 193 matching lines @@
 void WindowServer::OnFirstWindowManagerWindowTreeFactoryReady() {
   if (display_manager_->has_active_or_pending_displays())
     return;
 
   // We've been supplied a WindowManagerFactory and no displays have been
   // created yet. Treat this as a signal to create a Display.
   // TODO(sky): we need a better way to determine this, most likely a switch.
   delegate_->CreateDefaultDisplays();
 }
 
+UserActivityMonitor* WindowServer::GetUserActivityMonitorForUser(
+    const UserId& user_id) {
+  return GetWindowManagerStateForUser(user_id)->user_activity_monitor();
+}
+
 bool WindowServer::SetFocusedWindow(ServerWindow* window) {
   // TODO(sky): this should fail if there is modal dialog active and |window|
   // is outside that.
   ServerWindow* currently_focused = GetFocusedWindow();
   Display* focused_display =
       currently_focused
           ? display_manager_->GetDisplayContaining(currently_focused)
           : nullptr;
   if (!window)
     return focused_display ? focused_display->SetFocusedWindow(nullptr) : true;
@@ skipping 433 matching lines @@
 }
 
 WindowManagerState* WindowServer::GetWindowManagerStateForUser(
     const UserId& user_id) {
   return window_manager_window_tree_factory_set_.GetWindowManagerStateForUser(
       user_id);
 }
 
 }  // namespace ws
 }  // namespace mus