Add chrome/browser/apps/BUILD.gn and move Chrome-specific code there

apps/app_load_service.h

-// Copyright 2013 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 APPS_APP_LOAD_SERVICE_H_
-#define APPS_APP_LOAD_SERVICE_H_
-
-#include <map>
-#include <string>
-
-#include "base/command_line.h"
-#include "base/files/file_path.h"
-#include "components/keyed_service/core/keyed_service.h"
-#include "content/public/browser/notification_observer.h"
-#include "content/public/browser/notification_registrar.h"
-#include "extensions/browser/extension_registry_observer.h"
-
-namespace content {
-class BrowserContext;
-}
-
-namespace extensions {
-struct UnloadedExtensionInfo;
-}
-
-namespace apps {
-
-// Monitors apps being reloaded and performs app specific actions (like launch
-// or restart) on them. Also provides an interface to schedule these actions.
-class AppLoadService : public KeyedService,
-                       public content::NotificationObserver,
-                       public extensions::ExtensionRegistryObserver {
- public:
-  enum PostReloadActionType {
-    LAUNCH_FOR_RELOAD,
-    RESTART,
-    LAUNCH_FOR_LOAD_AND_LAUNCH,
-  };
-
-  struct PostReloadAction {
-    PostReloadAction();
-
-    PostReloadActionType action_type;
-    base::CommandLine command_line;
-    base::FilePath current_dir;
-  };
-
-  explicit AppLoadService(content::BrowserContext* context);
-  ~AppLoadService() override;
-
-  // KeyedService support:
-  void Shutdown() override;
-
-  // Reload the application with the given id and then send it the OnRestarted
-  // event.
-  void RestartApplication(const std::string& extension_id);
-
-  // Reload the application with the given id if it is currently running.
-  void RestartApplicationIfRunning(const std::string& extension_id);
-
-  // Loads (or reloads) the app with |extension_path|, then launches it. Any
-  // command line parameters from |command_line| will be passed along via
-  // launch parameters. Returns true if loading the extension has begun
-  // successfully.
-  bool LoadAndLaunch(const base::FilePath& extension_path,
-                     const base::CommandLine& command_line,
-                     const base::FilePath& current_dir);
-
-  // Loads (or reloads) the app with |extension_path|. Returns true if loading
-  // the app has begun successfully.
-  bool Load(const base::FilePath& extension_path);
-
-  static AppLoadService* Get(content::BrowserContext* context);
-
- private:
-  // content::NotificationObserver.
-  void Observe(int type,
-               const content::NotificationSource& source,
-               const content::NotificationDetails& details) override;
-
-  // extensions::ExtensionRegistryObserver.
-  void OnExtensionUnloaded(
-      content::BrowserContext* browser_context,
-      const extensions::Extension* extension,
-      extensions::UnloadedExtensionInfo::Reason reason) override;
-
-  bool WasUnloadedForReload(
-      const extensions::ExtensionId& extension_id,
-      const extensions::UnloadedExtensionInfo::Reason reason);
-  bool HasPostReloadAction(const std::string& extension_id);
-
-  // Map of extension id to reload action. Absence from the map implies
-  // no action.
-  std::map<std::string, PostReloadAction> post_reload_actions_;
-  content::NotificationRegistrar registrar_;
-  content::BrowserContext* context_;
-
-  DISALLOW_COPY_AND_ASSIGN(AppLoadService);
-};
-
-}  // namespace apps
-
-#endif  // APPS_APP_LOAD_SERVICE_H_