chromeos: Makes AshTestBase/Helper target mash when appropriate

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>
@@ skipping 19 matching lines @@
 namespace system {
 class ScopedFakeStatisticsProvider;
 }
 }
 
 namespace views {
 class AuraInit;
 }
 
 namespace ash {
+namespace test {
+class AshTestHelper;
+}
 namespace mus {
 
 class NetworkConnectDelegateMus;
 class WindowManager;
 
 // Hosts the window manager and the ash system user interface for mash.
 class WindowManagerApplication : public service_manager::Service {
  public:
   WindowManagerApplication();
   ~WindowManagerApplication() override;
 
   WindowManager* window_manager() { return window_manager_.get(); }
 
  private:
+  friend class ash::test::AshTestHelper;
   friend class WmTestBase;
   friend class WmTestHelper;
 
   void InitWindowManager(
       std::unique_ptr<aura::WindowTreeClient> window_tree_client,
       const scoped_refptr<base::SequencedWorkerPool>& blocking_pool);
 
   // Initializes lower-level OS-specific components (e.g. D-Bus services).
   void InitializeComponents();
   void ShutdownComponents();
@@ skipping 16 matching lines @@
   std::unique_ptr<chromeos::system::ScopedFakeStatisticsProvider>
       statistics_provider_;
 
   DISALLOW_COPY_AND_ASSIGN(WindowManagerApplication);
 };
 
 }  // namespace mus
 }  // namespace ash
 
 #endif  // ASH_MUS_WINDOW_MANAGER_APPLICATION_H_