Removes code using mus client lib

ui/views/mus/input_method_mus.h

-// Copyright (c) 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 UI_VIEWS_MUS_INPUT_METHOD_MUS_H_
-#define UI_VIEWS_MUS_INPUT_METHOD_MUS_H_
-
-#include "base/macros.h"
-#include "mojo/public/cpp/bindings/strong_binding.h"
-#include "services/service_manager/public/cpp/connector.h"
-#include "services/ui/public/interfaces/ime/ime.mojom.h"
-#include "ui/base/ime/input_method_base.h"
-#include "ui/views/mus/mus_export.h"
-
-namespace ui {
-class Window;
-namespace mojom {
-enum class EventResult;
-}  // namespace mojom
-}  // namespace ui
-
-namespace views {
-
-class TextInputClientImpl;
-
-class VIEWS_MUS_EXPORT InputMethodMus : public ui::InputMethodBase {
- public:
-  InputMethodMus(ui::internal::InputMethodDelegate* delegate,
-                 ui::Window* window);
-  ~InputMethodMus() override;
-
-  void Init(service_manager::Connector* connector);
-  void DispatchKeyEvent(
-      ui::KeyEvent* event,
-      std::unique_ptr<base::Callback<void(ui::mojom::EventResult)>>
-          ack_callback);
-
-  // Overridden from ui::InputMethod:
-  void OnFocus() override;
-  void OnBlur() override;
-  bool OnUntranslatedIMEMessage(const base::NativeEvent& event,
-                                NativeEventResult* result) override;
-  void DispatchKeyEvent(ui::KeyEvent* event) override;
-  void OnTextInputTypeChanged(const ui::TextInputClient* client) override;
-  void OnCaretBoundsChanged(const ui::TextInputClient* client) override;
-  void CancelComposition(const ui::TextInputClient* client) override;
-  void OnInputLocaleChanged() override;
-  bool IsCandidatePopupOpen() const override;
-
- private:
-  friend TextInputClientImpl;
-
-  // Overridden from ui::InputMethodBase:
-  void OnDidChangeFocusedClient(ui::TextInputClient* focused_before,
-                                ui::TextInputClient* focused) override;
-
-  void UpdateTextInputType();
-  void ProcessKeyEventCallback(
-      const ui::KeyEvent& event,
-      std::unique_ptr<base::Callback<void(ui::mojom::EventResult)>>
-          ack_callback,
-      bool handled);
-
-  // The toplevel window which is not owned by this class. This may be null
-  // for tests.
-  ui::Window* window_;
-
-  ui::mojom::IMEServerPtr ime_server_;
-  ui::mojom::InputMethodPtr input_method_;
-  std::unique_ptr<TextInputClientImpl> text_input_client_;
-
-  DISALLOW_COPY_AND_ASSIGN(InputMethodMus);
-};
-
-}  // namespace views
-
-#endif  // UI_VIEWS_MUS_INPUT_METHOD_MUS_H_