mash: Move tray accessibility and keyboard to //ash/common

ash/sysui/keyboard_ui_mus.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_SYSUI_KEYBOARD_UI_MUS_H_
 #define ASH_SYSUI_KEYBOARD_UI_MUS_H_
 
 #include <memory>
 
-#include "ash/keyboard/keyboard_ui.h"
+#include "ash/common/keyboard/keyboard_ui.h"
 #include "base/macros.h"
 #include "mojo/public/cpp/bindings/binding.h"
 #include "ui/keyboard/keyboard.mojom.h"
 
 namespace shell {
 class Connector;
 }
 
 namespace ash {
 
@@ skipping 21 matching lines @@
 
   keyboard::mojom::KeyboardPtr keyboard_;
   mojo::Binding<keyboard::mojom::KeyboardObserver> observer_binding_;
 
   DISALLOW_COPY_AND_ASSIGN(KeyboardUIMus);
 };
 
 }  // namespace ash
 
 #endif  // ASH_SYSUI_KEYBOARD_UI_MUS_H_