Remove obsolete app_list Linux code.

chrome/browser/ui/app_list/app_list_service_views.h

-// Copyright 2014 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_APP_LIST_APP_LIST_SERVICE_VIEWS_H_
-#define CHROME_BROWSER_UI_APP_LIST_APP_LIST_SERVICE_VIEWS_H_
-
-#include <memory>
-
-#include "base/macros.h"
-#include "chrome/browser/ui/app_list/app_list_service_impl.h"
-#include "chrome/browser/ui/app_list/app_list_shower_delegate.h"
-#include "chrome/browser/ui/app_list/app_list_shower_views.h"
-#include "ui/app_list/app_list_model.h"
-
-class AppListControllerDelegate;
-
-// AppListServiceViews manages a desktop app list that uses toolkit-views.
-class AppListServiceViews : public AppListServiceImpl,
-                            public AppListShowerDelegate {
- public:
-  explicit AppListServiceViews(
-      std::unique_ptr<AppListControllerDelegate> controller_delegate);
-  ~AppListServiceViews() override;
-
-  // Set |can_dismiss| to prevent the app list dismissing when losing focus. For
-  // example, while showing a window-modal dialog.
-  void set_can_dismiss(bool can_dismiss) { can_dismiss_ = can_dismiss; }
-
-  AppListShower& shower() { return shower_; }
-
-  // Called by the AppListControllerDelegate when it is told that the app list
-  // view must be destroyed.
-  virtual void OnViewBeingDestroyed();
-
-  // AppListService overrides:
-  void Init(Profile* initial_profile) override;
-  void ShowForProfile(Profile* requested_profile) override;
-  void ShowForAppInstall(Profile* profile,
-                         const std::string& extension_id,
-                         bool start_discovery_tracking) override;
-  void ShowForCustomLauncherPage(Profile* profile) override;
-  void HideCustomLauncherPage() override;
-  void DismissAppList() override;
-  bool IsAppListVisible() const override;
-  gfx::NativeWindow GetAppListWindow() override;
-  Profile* GetCurrentAppListProfile() override;
-  AppListControllerDelegate* GetControllerDelegate() override;
-
-  // AppListServiceImpl overrides:
-  void CreateForProfile(Profile* requested_profile) override;
-  void DestroyAppList() override;
-
-  // AppListShowerDelegate overrides:
-  AppListViewDelegate* GetViewDelegateForCreate() override;
-
- private:
-  // Switches to |state|, unless it is |INVALID_STATE| (in which case, opens on
-  // the default state).
-  void ShowForProfileInternal(Profile* profile,
-                              app_list::AppListModel::State state);
-
-  // Responsible for creating the app list and responding to profile changes.
-  AppListShower shower_;
-
-  bool can_dismiss_;
-  std::unique_ptr<AppListControllerDelegate> controller_delegate_;
-
-  DISALLOW_COPY_AND_ASSIGN(AppListServiceViews);
-};
-
-#endif  // CHROME_BROWSER_UI_APP_LIST_APP_LIST_SERVICE_VIEWS_H_