dbus: Make Bus::GetManagedObjects skip unavailable services.

dbus/bus.cc

 // Copyright (c) 2012 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 "dbus/bus.h"
 
 #include <stddef.h>
 
 #include "base/bind.h"
 #include "base/logging.h"
@@ skipping 385 matching lines @@
   DCHECK(object_manager.get());
 
   // Release the object manager and run the callback.
   object_manager = NULL;
   callback.Run();
 }
 
 void Bus::GetManagedObjects() {
   for (ObjectManagerTable::iterator iter = object_manager_table_.begin();
        iter != object_manager_table_.end(); ++iter) {
-    iter->second->GetManagedObjects();
+    // Don't spam the logs with D-Bus errors if the service is unavailable.
+    if (iter->second->ServiceIsAvailable())
+      iter->second->GetManagedObjects();
   }
 }
 
 bool Bus::Connect() {
   // dbus_bus_get_private() and dbus_bus_get() are blocking calls.
   AssertOnDBusThread();
 
   // Check if it's already initialized.
   if (connection_)
     return true;
@@ skipping 799 matching lines @@
                              kNameOwnerChangedSignal)) {
     Bus* self = static_cast<Bus*>(data);
     self->OnServiceOwnerChanged(message);
   }
   // Always return unhandled to let others, e.g. ObjectProxies, handle the same
   // signal.
   return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
 }
 
 }  // namespace dbus