Revert of Add the Play Store app search to the launcher.

chrome/browser/ui/app_list/search/arc/arc_playstore_search_provider.h

-// Copyright 2017 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_SEARCH_ARC_ARC_PLAYSTORE_SEARCH_PROVIDER_H_
-#define CHROME_BROWSER_UI_APP_LIST_SEARCH_ARC_ARC_PLAYSTORE_SEARCH_PROVIDER_H_
-
-#include <memory>
-#include <vector>
-
-#include "components/arc/common/app.mojom.h"
-#include "ui/app_list/search_provider.h"
-
-class Profile;
-class AppListControllerDelegate;
-
-namespace app_list {
-
-class ArcPlayStoreSearchProvider : public SearchProvider {
- public:
-  ArcPlayStoreSearchProvider(int max_results,
-                             Profile* profile,
-                             AppListControllerDelegate* list_controller);
-  ~ArcPlayStoreSearchProvider() override;
-
- protected:
-  // app_list::SearchProvider overrides:
-  void Start(bool is_voice_query, const base::string16& query) override;
-  void Stop() override;
-
- private:
-  void OnResults(std::vector<arc::mojom::AppDiscoveryResultPtr> results);
-
-  const int max_results_;
-  // |profile_| is owned by ProfileInfo.
-  Profile* const profile_;
-  // list_controller_ is owned by AppListServiceAsh and lives
-  // until the service finishes.
-  AppListControllerDelegate* const list_controller_;
-  base::WeakPtrFactory<ArcPlayStoreSearchProvider> weak_ptr_factory_;
-
-  DISALLOW_COPY_AND_ASSIGN(ArcPlayStoreSearchProvider);
-};
-
-}  // namespace app_list
-
-#endif  // CHROME_BROWSER_UI_APP_LIST_SEARCH_ARC_ARC_PLAYSTORE_SEARCH_PROVIDER_H_