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

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 142 matching lines @@
   void OnWmWillCreateDisplay(const display::Display& display) override;
   void OnWmNewDisplay(std::unique_ptr<aura::WindowTreeHostMus> window_tree_host,
                       const display::Display& display) override;
   void OnWmDisplayRemoved(aura::WindowTreeHostMus* window_tree_host) override;
   void OnWmDisplayModified(const display::Display& display) override;
   void OnWmPerformMoveLoop(aura::Window* window,
                            ui::mojom::MoveLoopSource source,
                            const gfx::Point& cursor_location,
                            const base::Callback<void(bool)>& on_done) override;
   void OnWmCancelMoveLoop(aura::Window* window) override;
-  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;
   void OnWmSetClientArea(
       aura::Window* window,
       const gfx::Insets& insets,
       const std::vector<gfx::Rect>& additional_client_areas) override;
   bool IsWindowActive(aura::Window* window) override;
   void OnWmDeactivateWindow(aura::Window* window) override;
 
   service_manager::Connector* connector_;
   display::mojom::DisplayControllerPtr display_controller_;
 
@@ skipping 24 matching lines @@
   // See WmShellMus's constructor for details. Tests may set to false.
   bool create_session_state_delegate_stub_for_test_ = true;
 
   DISALLOW_COPY_AND_ASSIGN(WindowManager);
 };
 
 }  // namespace mus
 }  // namespace ash
 
 #endif  // ASH_MUS_WINDOW_MANAGER_H_