Allow dbus clients to silence logging when a service is unavailable.

dbus/bus.h

 // Copyright (c) 2011 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 DBUS_BUS_H_
 #define DBUS_BUS_H_
 #pragma once
 
 #include <map>
 #include <set>
@@ skipping 178 matching lines @@
   // The object proxy is used to call methods of remote objects, and
   // receive signals from them.
   //
   // |service_name| looks like "org.freedesktop.NetworkManager", and
   // |object_path| looks like "/org/freedesktop/NetworkManager/Devices/0".
   //
   // Must be called in the origin thread.
   virtual ObjectProxy* GetObjectProxy(const std::string& service_name,
                                       const std::string& object_path);
 
+  // Same as above, but silence logging of
+  // org.freedesktop.DBus.Error.ServiceUnknown errors.
+  // This is useful for clients for whom the non-existence of the DBus
+  // service in question can be safely ignored.
+  virtual ObjectProxy* GetObjectProxyIgnoreUnknownService(

[satorux1, 2012/02/10 08:12:52]

Let's make this more generic, like GetObjectProxyWithOptions(
  const std::string& service_name, const std::string& object_path, int options);

See my other comments about 'options'.

[adamk, 2012/02/10 17:57:16]

Done.

+      const std::string& service_name, const std::string& object_path);
+
   // Gets the exported object for the given service name and the object
   // path. The caller must not delete the returned object.
   //
   // Returns an existing exported object if the bus object already owns
   // the exported object for the given service name and the object path.
   // Never returns NULL.
   //
   // The bus will own all exported objects created by the bus, to ensure
   // that the exported objects are unregistered at the shutdown time of
   // the bus.
@@ skipping 270 matching lines @@
   // OnAddTimeout()/OnRemoveTimeou() are balanced.
   int num_pending_watches_;
   int num_pending_timeouts_;
 
   DISALLOW_COPY_AND_ASSIGN(Bus);
 };
 
 }  // namespace dbus
 
 #endif  // DBUS_BUS_H_