mash: Provide a fake chromeos StatisticsProvider in ash

ash/mus/window_manager_application.h

 // Copyright 2015 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 ASH_MUS_WINDOW_MANAGER_APPLICATION_H_
 #define ASH_MUS_WINDOW_MANAGER_APPLICATION_H_
 
 #include <stdint.h>
 
 #include <memory>
 #include <set>
 
 #include "ash/public/interfaces/shelf.mojom.h"
 #include "base/macros.h"
 #include "mash/session/public/interfaces/session.mojom.h"
 #include "mojo/public/cpp/bindings/binding.h"
 #include "mojo/public/cpp/bindings/binding_set.h"
 #include "services/shell/public/cpp/service.h"
 #include "services/tracing/public/cpp/provider.h"
 #include "services/ui/common/types.h"
 #include "services/ui/public/interfaces/accelerator_registrar.mojom.h"
 
+namespace chromeos {
+namespace system {
+class ScopedFakeStatisticsProvider;
+}
+}
+
 namespace views {
 class AuraInit;
 class SurfaceContextFactory;
 }
 
 namespace ui {
 class Event;
 class GpuService;
 class WindowTreeClient;
 }
@@ skipping 55 matching lines @@
 
   mojo::BindingSet<ash::mojom::ShelfController> shelf_controller_bindings_;
 
   std::set<AcceleratorRegistrarImpl*> accelerator_registrars_;
 
   mash::session::mojom::SessionPtr session_;
 
   mojo::Binding<mash::session::mojom::ScreenlockStateListener>
       screenlock_state_listener_binding_;
 
+#if defined(OS_CHROMEOS)
+  std::unique_ptr<chromeos::system::ScopedFakeStatisticsProvider>
+      statistics_provider_;
+#endif
+
   DISALLOW_COPY_AND_ASSIGN(WindowManagerApplication);
 };
 
 }  // namespace mus
 }  // namespace ash
 
 #endif  // ASH_MUS_WINDOW_MANAGER_APPLICATION_H_