arc: Stop/start ARC++ kiosk app when maintenance session started/finished.

chrome/browser/chromeos/app_mode/arc/arc_kiosk_app_service.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_CHROMEOS_APP_MODE_ARC_ARC_KIOSK_APP_SERVICE_H_
 #define CHROME_BROWSER_CHROMEOS_APP_MODE_ARC_ARC_KIOSK_APP_SERVICE_H_
 
 #include "base/macros.h"
 #include "chrome/browser/chromeos/app_mode/arc/arc_kiosk_app_launcher.h"
 #include "chrome/browser/chromeos/app_mode/arc/arc_kiosk_app_manager.h"
+#include "chrome/browser/profiles/profile.h"

[Luis Héctor Chávez, 2016/12/16 16:33:46]

nit: You can remove this (as well as L16) since you only have pointers to those
things, and forward declare them:

namespace content {
class BrowserContext;
}  // namespace content

namespace chromeos {

class Profile;

...

[Sergey Poromov, 2016/12/16 17:00:30]

Can't get rid of including profile.h as I need to keep inheritance from
BrowserContext

[hidehiko, 2016/12/19 13:53:33]

You can use forward decl in the header file, and then include the profile.h in
.cc file, instead.

[Sergey Poromov, 2016/12/19 17:28:38]

In that case I get
../../chrome/browser/chromeos/app_mode/arc/arc_kiosk_app_service_factory.cc:37:51:
error: invalid static_cast from type 'content::BrowserContext*' to type
'chromeos::Profile*'
   Profile* profile = static_cast<Profile*>(context);

[hidehiko, 2016/12/19 17:39:18]

Profile lives in a global namespace.
https://cs.chromium.org/chromium/src/chrome/browser/profiles/profile.h?q=Prof...

[Sergey Poromov, 2016/12/20 10:56:51]

I realized that the problem was originally because arc_service_launcher.cc
didn't include "profile.h" and didn't know about inheritance. Fixed now.

 #include "chrome/browser/ui/app_list/arc/arc_app_list_prefs.h"
+#include "components/arc/kiosk/arc_kiosk_bridge.h"
 #include "components/keyed_service/core/keyed_service.h"
 #include "components/prefs/pref_change_registrar.h"
 #include "content/public/browser/browser_context.h"
 
 namespace chromeos {
 
 // Keeps track of ARC session state and auto-launches kiosk app when it's ready.
 // App is started when the following conditions are satisfied:
 // 1. App id is registered in ArcAppListPrefs and set to "ready" state.
 // 2. Got empty policy compliance report from Android
 // 3. App is not yet started
 // Also, the app is stopped when one of above conditions changes.
 class ArcKioskAppService
     : public KeyedService,
       public ArcAppListPrefs::Observer,
-      public ArcKioskAppManager::ArcKioskAppManagerObserver {
+      public ArcKioskAppManager::ArcKioskAppManagerObserver,
+      public arc::ArcKioskBridge::Delegate {
  public:
-  static ArcKioskAppService* Create(Profile* profile, ArcAppListPrefs* prefs);
+  static ArcKioskAppService* Create(Profile* profile);
   static ArcKioskAppService* Get(content::BrowserContext* context);
 
+  // KeyedService overrides
+  void Shutdown() override;
+
   // ArcAppListPrefs::Observer overrides
   void OnAppRegistered(const std::string& app_id,
                        const ArcAppListPrefs::AppInfo& app_info) override;
   void OnAppReadyChanged(const std::string& id, bool ready) override;
   void OnTaskCreated(int32_t task_id,
                      const std::string& package_name,
                      const std::string& activity,
                      const std::string& intent) override;
   void OnTaskDestroyed(int32_t task_id) override;
   void OnPackageListInitialRefreshed() override;
 
   // ArcKioskAppManager::Observer overrides
   void OnArcKioskAppsChanged() override;
 
+  // ArcKioskBridge::Delegate overrides
+  void OnMaintenanceSessionCreated() override;
+  void OnMaintenanceSessionFinished() override;
+
  private:
-  ArcKioskAppService(Profile* profile, ArcAppListPrefs* prefs);
+  explicit ArcKioskAppService(Profile* profile);
   ~ArcKioskAppService() override;
 
   std::string GetAppId();
   // Called when app should be started or stopped.
   void PreconditionsChanged();
 
   Profile* const profile_;
-  ArcAppListPrefs* const prefs_;
+  bool maintenance_session_running_;
   ArcKioskAppManager* app_manager_;
   std::string app_id_;
   std::unique_ptr<ArcAppListPrefs::AppInfo> app_info_;
   int32_t task_id_ = -1;
   std::unique_ptr<PrefChangeRegistrar> pref_change_registrar_;
   // Keeps track whether the app is already launched
   std::unique_ptr<ArcKioskAppLauncher> app_launcher_;
 
   DISALLOW_COPY_AND_ASSIGN(ArcKioskAppService);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_APP_MODE_ARC_ARC_KIOSK_APP_SERVICE_H_