Adds ability for accelerators to add key/value pairs to KeyEvent

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>
@@ skipping 18 matching lines @@
 // 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::mojom::EventResult OnAccelerator(
+      uint32_t id,
+      const ui::Event& event,
+      std::unordered_map<std::string, std::vector<uint8_t>>* properties)
+      override;
 
  private:
   friend class AcceleratorControllerRegistrarTestApi;
 
   // ui::AcceleratorManagerDelegate:
   void OnAcceleratorsRegistered(
       const std::vector<ui::Accelerator>& accelerators) override;
   void OnAcceleratorUnregistered(const ui::Accelerator& accelerator) override;
 
   // Generate id and add the corresponding accelerator to accelerator vector.
@@ skipping 50 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_