Get AcceleratorControllerTest working with mash

ash/mus/accelerators/accelerator_controller_registrar.h

 // Copyright 2016 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_ACCELERATORS_ACCELERATOR_CONTROLLER_REGISTRAR_H_
 #define ASH_MUS_ACCELERATORS_ACCELERATOR_CONTROLLER_REGISTRAR_H_
 
 #include <stdint.h>
 
 #include <map>
 
 #include "ash/mus/accelerators/accelerator_handler.h"
 #include "base/macros.h"
 #include "ui/base/accelerators/accelerator.h"
 #include "ui/base/accelerators/accelerator_manager_delegate.h"
 #include "ui/events/mojo/event_constants.mojom.h"
 
 namespace ash {
 
 class AcceleratorRouter;
 
 namespace mus {
 
+class AcceleratorControllerRegistrarTestApi;
 class WindowManager;
 
 // Responsible for registering accelerators created by AcceleratorController
 // with the WindowManager, as well as routing handling of accelerators to
 // the right place.
 class AcceleratorControllerRegistrar : public AcceleratorHandler,
                                        public ui::AcceleratorManagerDelegate {
  public:
   AcceleratorControllerRegistrar(WindowManager* window_manager,
                                  uint16_t id_namespace);
   ~AcceleratorControllerRegistrar() override;
 
   // AcceleratorHandler:
   ui::mojom::EventResult OnAccelerator(uint32_t id,
                                        const ui::Event& event) override;
 
   // ui::AcceleratorManagerDelegate:
   void OnAcceleratorRegistered(const ui::Accelerator& accelerator) override;
   void OnAcceleratorUnregistered(const ui::Accelerator& accelerator) override;
 
  private:
+  friend class AcceleratorControllerRegistrarTestApi;
+
   // The flow of accelerators in ash is:
   // . wm::AcceleratorFilter() sees events first as it's a pre-target handler.
   // . AcceleratorFilter forwards to its delegate, which indirectly is
   //   implemented by AcceleratorRouter.
   // . AcceleratorRouter may early out, if not it calls through to
   //   AcceleratorController. This stop may stop propagation entirely.
   // . If focus is on a Widget, then NativeWidgetAura gets the key event, calls
   //   to Widget::OnKeyEvent(), which calls to FocusManager::OnKeyEvent(), which
   //   calls to AshFocusManagerFactory::Delegate::ProcessAccelerator() finally
   //   ending up in AcceleratorController::Process().
@@ skipping 34 matching lines @@
   // Maps from accelerator to the two ids registered for it.
   std::map<ui::Accelerator, Ids> accelerator_to_ids_;
 
   DISALLOW_COPY_AND_ASSIGN(AcceleratorControllerRegistrar);
 };
 
 }  // namespace mus
 }  // namespace ash
 
 #endif  // ASH_MUS_ACCELERATORS_ACCELERATOR_CONTROLLER_REGISTRAR_H_