chromeos: convert remaining AshTest usage to AshTestBase

ash/mus/window_manager.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_H_
 #define ASH_MUS_WINDOW_MANAGER_H_
 
 #include <stdint.h>
 
 #include <memory>
@@ skipping 41 matching lines @@
 
 enum class Config;
 
 namespace test {
 class AshTestHelper;
 }
 
 namespace mus {
 
 class AcceleratorHandler;
-class WmTestHelper;
 
 // WindowManager serves as the WindowManagerDelegate and
 // WindowTreeClientDelegate for mash. WindowManager creates (and owns)
 // a RootWindowController per Display. WindowManager takes ownership of
 // the WindowTreeClient.
 class WindowManager : public aura::WindowManagerDelegate,
                       public aura::WindowTreeClientDelegate {
  public:
   // Set |show_primary_host_on_connect| to true if the initial display should
   // be made visible.  Generally tests should use false, other places use true.
@@ skipping 47 matching lines @@
   // service_manager::Connector was available, for example in some tests.
   display::mojom::DisplayController* GetDisplayController();
 
   // Called during creation of the shell to create a RootWindowController.
   // See comment in CreateRootWindowController() for details.
   void CreatePrimaryRootWindowController(
       std::unique_ptr<aura::WindowTreeHostMus> window_tree_host);
 
  private:
   friend class test::AshTestHelper;
-  friend class WmTestHelper;
 
   using RootWindowControllers = std::set<std::unique_ptr<RootWindowController>>;
 
   // Called once the first Display has been obtained.
   void CreateShell(
       std::unique_ptr<aura::WindowTreeHostMus> primary_window_tree_host);
 
   void CreateAndRegisterRootWindowController(
       std::unique_ptr<aura::WindowTreeHostMus> window_tree_host,
       const display::Display& display,
@@ skipping 103 matching lines @@
 
   std::unique_ptr<ui::InputDeviceClient> input_device_client_;
 
   DISALLOW_COPY_AND_ASSIGN(WindowManager);
 };
 
 }  // namespace mus
 }  // namespace ash
 
 #endif  // ASH_MUS_WINDOW_MANAGER_H_