IME for Mus: Use ui::InputMethodChromeOS to provide logic for ime driver.

chrome/browser/ui/views/ime_driver_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 CHROME_BROWSER_UI_VIEWS_IME_DRIVER_MUS_H_
-#define CHROME_BROWSER_UI_VIEWS_IME_DRIVER_MUS_H_
-
-#include <stdint.h>
-
-#include <map>
-#include <memory>
-
-#include "mojo/public/cpp/bindings/binding.h"
-#include "services/ui/public/interfaces/ime/ime.mojom.h"
-
-class IMEDriver : public ui::mojom::IMEDriver {
- public:
-  ~IMEDriver() override;
-
-  // Instantiate the IME driver and register it to the UI service.
-  static void Register();
-
- private:
-  IMEDriver();
-
-  // ui::mojom::IMEDriver:
-  void StartSession(
-      int32_t session_id,
-      ui::mojom::TextInputClientPtr client,
-      ui::mojom::InputMethodRequest input_method_request) override;
-  void CancelSession(int32_t session_id) override;
-
-  std::map<int32_t, std::unique_ptr<mojo::Binding<ui::mojom::InputMethod>>>
-      input_method_bindings_;
-
-  DISALLOW_COPY_AND_ASSIGN(IMEDriver);
-};
-
-#endif  // CHROME_BROWSER_UI_VIEWS_IME_DRIVER_MUS_H_