Add UpstartClient

chromeos/dbus/upstart_client.h

Index: chromeos/dbus/upstart_client.h
diff --git a/chromeos/dbus/upstart_client.h b/chromeos/dbus/upstart_client.h
new file mode 100644
index 0000000000000000000000000000000000000000..e0ee6b41612c5a93c4bd159802da7a02c6c9cc78
--- /dev/null
+++ b/chromeos/dbus/upstart_client.h
@@ -0,0 +1,37 @@
+// Copyright (c) 2016 The Chromium Authors. All rights reserved.

[hashimoto, 2016/11/14 22:09:41]

nit: No (c) after Copyright.
(see
https://chromium.googlesource.com/chromium/src/+/master/styleguide/c++/c++.md...)

Sorry for not noticing this in the previous reviews.

[Roman Sorokin (ftl), 2016/11/15 10:04:10]

Done.

+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CHROMEOS_DBUS_UPSTART_CLIENT_H_
+#define CHROMEOS_DBUS_UPSTART_CLIENT_H_
+
+#include "chromeos/chromeos_export.h"
+#include "chromeos/dbus/dbus_client.h"
+
+namespace chromeos {
+
+// UpstartClient is used to communicate with the com.ubuntu.Upstart
+// sevice. All methods should be called from the origin thread (UI thread) which
+// initializes the DBusThreadManager instance.
+class CHROMEOS_EXPORT UpstartClient : public DBusClient {
+ public:
+  ~UpstartClient() override;
+
+  // Factory function, creates a new instance and returns ownership.
+  // For normal usage, access the singleton via DBusThreadManager::Get().
+  static UpstartClient* Create();
+
+  // Non-blocking signal to Upstart to start authpolicyd.

[hashimoto, 2016/11/14 22:09:41]

Using the term "signal" here is confusing as it's not emitting a D-Bus signal,
but just calling a method.
Maybe just "Starts authpolicyd"?

[Roman Sorokin (ftl), 2016/11/15 10:04:10]

Done.

+  virtual void StartAuthPolicyService() = 0;
+
+ protected:
+  // Create() should be used instead.
+  UpstartClient();
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(UpstartClient);
+};
+
+}  // namespace chromeos
+
+#endif  // CHROMEOS_DBUS_UPSTART_CLIENT_H_