arc: ARC loading progress should not be shown when started from OOBE.

chrome/browser/chromeos/arc/test/arc_data_removed_waiter.h

+// 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_CHROMEOS_ARC_TEST_ARC_DATA_REMOVED_WAITER_H_
+#define CHROME_BROWSER_CHROMEOS_ARC_TEST_ARC_DATA_REMOVED_WAITER_H_
+
+#include <memory>
+
+#include "base/macros.h"
+#include "chrome/browser/chromeos/arc/arc_session_manager.h"
+
+namespace base {
+class RunLoop;
+}
+
+namespace arc {
+
+// Waits for ARC data has been removed.
+class ArcDataRemovedWaiter : public ArcSessionManager::Observer {
+ public:
+  ArcDataRemovedWaiter();
+  ~ArcDataRemovedWaiter() override;
+
+  // Waits until ARC data is removed. Waiting is end once ArcSessionManager
+  // sends OnArcDataRemoved notification.
+  void Wait();
+
+ private:
+  // ArcSessionManager::Observer:
+  void OnArcDataRemoved() override;
+
+  std::unique_ptr<base::RunLoop> run_loop_;
+
+  DISALLOW_COPY_AND_ASSIGN(ArcDataRemovedWaiter);
+};
+
+}  // namespace arc
+
+#endif  // CHROME_BROWSER_CHROMEOS_ARC_TEST_ARC_DATA_REMOVED_WAITER_H_