dbus: Make Bus::GetManagedObjects skip unavailable services.

dbus/object_manager.cc

 // Copyright (c) 2013 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/object_manager.h"
 
 #include <stddef.h>
 
 #include "base/bind.h"
 #include "base/location.h"
@@ skipping 129 matching lines @@
   MethodCall method_call(kObjectManagerInterface,
                          kObjectManagerGetManagedObjects);
 
   object_proxy_->CallMethod(
       &method_call,
       ObjectProxy::TIMEOUT_USE_DEFAULT,
       base::Bind(&ObjectManager::OnGetManagedObjects,
                  weak_ptr_factory_.GetWeakPtr()));
 }
 
+bool ObjectManager::ServiceIsAvailable() {
+  return object_proxy_->ServiceIsAvailable();
+}
+
 void ObjectManager::CleanUp() {
   DCHECK(bus_);
   bus_->AssertOnDBusThread();
   DCHECK(!cleanup_called_);
 
   cleanup_called_ = true;
 
   if (!setup_success_)
     return;
 
@@ skipping 366 matching lines @@
         RemoveInterface(object_path, *iiter);
     }
 
   }
 
   if (!new_owner.empty())
     GetManagedObjects();
 }
 
 }  // namespace dbus