dbus: allow unregistering of exported objects

dbus/bus.cc

Index: dbus/bus.cc
diff --git a/dbus/bus.cc b/dbus/bus.cc
index 9d4a43638495a361f54d466e5890424285e2b4e6..71e3dc8733582199a9908939a784832981c565a9 100644
--- a/dbus/bus.cc
+++ b/dbus/bus.cc
@@ -250,6 +250,26 @@ ExportedObject* Bus::GetExportedObject(const ObjectPath& object_path) {
   return exported_object.get();
 }
 
+void Bus::UnregisterExportedObject(const ObjectPath& object_path) {
+  AssertOnOriginThread();
+
+  PostTaskToDBusThread(FROM_HERE, base::Bind(
+      &Bus::UnregisterExportedObjectInternal,
+      this, object_path));
+}
+
+void Bus::UnregisterExportedObjectInternal(const ObjectPath& object_path) {
+  AssertOnDBusThread();
+
+  // Make sure the requested object exists.
+  ExportedObjectTable::iterator iter = exported_object_table_.find(object_path);
+  if (iter == exported_object_table_.end())
+    return;
+
+  iter->second->Unregister();
+  exported_object_table_.erase(iter);
+}
+
 bool Bus::Connect() {
   // dbus_bus_get_private() and dbus_bus_get() are blocking calls.
   AssertOnDBusThread();