Remove duplicate includes from chromeos/

chromeos/dbus/leadership_daemon_manager_client.cc

 // Copyright 2015 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 "chromeos/dbus/leadership_daemon_manager_client.h"
 
 #include "base/bind.h"
-#include "base/callback.h"
 #include "base/logging.h"
 #include "base/memory/weak_ptr.h"
 #include "base/message_loop/message_loop.h"
 #include "base/observer_list.h"
 #include "dbus/bus.h"
 #include "dbus/message.h"
 #include "dbus/object_manager.h"
 #include "dbus/object_proxy.h"
 #include "dbus/values_util.h"
 
@@ skipping 345 matching lines @@
 
 LeadershipDaemonManagerClient::~LeadershipDaemonManagerClient() {
 }
 
 // static
 LeadershipDaemonManagerClient* LeadershipDaemonManagerClient::Create() {
   return new LeadershipDaemonManagerClientImpl();
 }
 
 }  // namespace chromeos