Run RemoveArcData after a user has opted out

chrome/browser/chromeos/arc/arc_data_manager.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_ARC_ARC_DATA_MANAGER_H_
+#define CHROME_BROWSER_CHROMEOS_ARC_ARC_DATA_MANAGER_H_
+
+#include "base/macros.h"
+#include "base/threading/thread_checker.h"
+#include "components/arc/arc_bridge_service.h"
+
+class Profile;
+
+namespace arc {
+
+class ArcBridgeService;
+
+// This class controls the lifecycle of ARC user data, removing it when
+// necessary.

[stevenjb, 2016/05/13 17:13:55]

May I suggest renaming this something like ArcUserDataManager? "ARC data
manager" could refer to just about anything related to Arc and data :)

[dspaid, 2016/05/17 01:56:14]

Done.

+class ArcDataManager : public ArcBridgeService::Observer {
+ public:
+  ArcDataManager();
+  ~ArcDataManager() override;
+
+  static ArcDataManager* Get();
+
+  // Checks if arc is both stopped and disabled (opt-out) and triggers removal
+  // of user data if both conditions are true.
+  void ClearIfDisabled(Profile* profile);
+
+  // Called whenever arc service state changes to potentially remove data if
+  // the user has opted out.
+  // ArcBridgeService::Observer:
+  void OnStateChanged(ArcBridgeService::State state) override;
+
+ private:
+  base::ThreadChecker thread_checker_;
+
+  DISALLOW_COPY_AND_ASSIGN(ArcDataManager);
+};
+
+}  // namespace arc
+
+#endif  // CHROME_BROWSER_CHROMEOS_ARC_ARC_DATA_MANAGER_H_