dbus: Make Bus::GetManagedObjects skip unavailable services.

dbus/bus.h

 // 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.
 
 #ifndef DBUS_BUS_H_
 #define DBUS_BUS_H_
 
 #include <dbus/dbus.h>
 #include <stdint.h>
 
@@ skipping 342 matching lines @@
   // This method will asynchronously clean up any match rules that have been
   // added for the object manager and invoke |callback| when the operation is
   // complete. If this method returns false, then |callback| is never called.
   // The |callback| argument must not be null.
   //
   // Must be called in the origin thread.
   virtual bool RemoveObjectManager(const std::string& service_name,
                                    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:
   //
   // - Unregisters the object paths
   // - Releases the service names
   // - Closes the connection to dbus-daemon.
   //
   // This function can be called multiple times and it is no-op for the 2nd time
   // calling.
   //
@@ skipping 378 matching lines @@
   int num_pending_timeouts_;
 
   std::string address_;
 
   DISALLOW_COPY_AND_ASSIGN(Bus);
 };
 
 }  // namespace dbus
 
 #endif  // DBUS_BUS_H_