Add the Play Store app search to the launcher.

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

Index: chrome/browser/ui/app_list/search/arc/arc_playstore_search_provider.h
diff --git a/chrome/browser/ui/app_list/search/arc/arc_playstore_search_provider.h b/chrome/browser/ui/app_list/search/arc/arc_playstore_search_provider.h
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index 0000000000000000000000000000000000000000..40ca9ee5c9a5b5634d2b73d1a194b636d0866c0b
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+// 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_