[Merge M60] arc: Provide metric to monitor Play Store window is shown time.

chrome/browser/ui/ash/launcher/arc_app_window_launcher_controller.h

 // Copyright 2016 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_ASH_LAUNCHER_ARC_APP_WINDOW_LAUNCHER_CONTROLLER_H_
 #define CHROME_BROWSER_UI_ASH_LAUNCHER_ARC_APP_WINDOW_LAUNCHER_CONTROLLER_H_
 
 #include <map>
 #include <memory>
 #include <vector>
 
 #include "ash/shell_observer.h"
 #include "base/macros.h"
+#include "base/time/time.h"
+#include "chrome/browser/chromeos/arc/arc_session_manager.h"
 #include "chrome/browser/ui/app_list/arc/arc_app_list_prefs.h"
 #include "chrome/browser/ui/ash/launcher/app_window_launcher_controller.h"
 #include "chrome/browser/ui/ash/launcher/arc_app_shelf_id.h"
 #include "mojo/public/cpp/bindings/binding.h"
 #include "ui/aura/env_observer.h"
 #include "ui/aura/window_observer.h"
 
 namespace aura {
 class Window;
 }
 
 class ArcAppWindow;
 class ArcAppWindowLauncherItemController;
 class ChromeLauncherController;
 
 class Profile;
 
 class ArcAppWindowLauncherController : public AppWindowLauncherController,
                                        public aura::EnvObserver,
                                        public aura::WindowObserver,
                                        public ash::ShellObserver,
-                                       public ArcAppListPrefs::Observer {
+                                       public ArcAppListPrefs::Observer,
+                                       public arc::ArcSessionManager::Observer {
  public:
   explicit ArcAppWindowLauncherController(ChromeLauncherController* owner);
   ~ArcAppWindowLauncherController() override;
 
   // Returns ARC task id for the window.
   static int GetWindowTaskId(aura::Window* window);
 
   // AppWindowLauncherController:
   void ActiveUserChanged(const std::string& user_email) override;
   void AdditionalUserAddedToSession(Profile* profile) override;
@@ skipping 60 matching lines @@
       const AppWindowInfo& app_window_info);
 
   void SetOrientationLockForAppWindow(ArcAppWindow* app_window);
 
   std::vector<int> GetTaskIdsForApp(const std::string& arc_app_id) const;
 
   // AppWindowLauncherController:
   AppWindowLauncherItemController* ControllerForWindow(
       aura::Window* window) override;
 
+  // arc::ArcSessionManager::Observer:
+  void OnArcOptInManagementCheckStarted() override;
+  void OnArcSessionStopped(arc::ArcStopReason stop_reason) override;
+
   int active_task_id_ = -1;
   TaskIdToAppWindowInfo task_id_to_app_window_info_;
   ShelfGroupToAppControllerMap app_shelf_group_to_controller_map_;
   std::vector<aura::Window*> observed_windows_;
   Profile* observed_profile_ = nullptr;
   bool observing_shell_ = false;
 
+  // The time when the ARC OptIn management check was started. This happens
+  // right after user agrees the ToS or in some cases for managed user when ARC
+  // starts for the first time. OptIn management check is preceding step before
+  // ARC container is actually started.
+  base::Time opt_in_management_check_start_time_;
+
   DISALLOW_COPY_AND_ASSIGN(ArcAppWindowLauncherController);
 };
 
 #endif  // CHROME_BROWSER_UI_ASH_LAUNCHER_ARC_APP_WINDOW_LAUNCHER_CONTROLLER_H_