dbus: Make Bus::GetManagedObjects skip unavailable services.

dbus/bus.h

Index: dbus/bus.h
diff --git a/dbus/bus.h b/dbus/bus.h
index 7d3915909b9fb42792c328522ae0ee1b9f2e0af9..d66048bba716478f2c657b531838c3c637ce42de 100644
--- a/dbus/bus.h
+++ b/dbus/bus.h
@@ -360,12 +360,6 @@ class CHROME_DBUS_EXPORT Bus : public base::RefCountedThreadSafe<Bus> {
                                    const ObjectPath& object_path,
                                    const base::Closure& callback);
 
-  // Instructs all registered object managers to retrieve their set of managed
-  // objects from their respective remote objects. There is no need to call this
-  // manually, this is called automatically by the D-Bus thread manager once
-  // implementation classes are registered.
-  virtual void GetManagedObjects();
-
   // Shuts down the bus and blocks until it's done. More specifically, this
   // function does the following:
   //