Disable ACTION_BOOT_COMPLETED event for 3rd party apps.

components/arc/arc_features.cc

+// 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.
+
+#include "components/arc/arc_features.h"
+
+namespace arc {
+
+#if defined(OS_CHROMEOS)
+// Controls ACTION_BOOT_COMPLETD broadcast for third party applications on ARC.
+// When disabled, third party apps will not receive this broadcast.
+const base::Feature kArcBootCompletedBroadcast{
+    "ArcBootCompletedBroadcast", base::FEATURE_ENABLED_BY_DEFAULT};
+#endif  // defined(OS_CHROMEOS)
+
+}  // namespace arc