Use std::move() instead of .Pass() in remoting/host

remoting/host/cast_extension.cc

 // Copyright 2014 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 "remoting/host/cast_extension.h"
 
 #include "net/url_request/url_request_context_getter.h"
 #include "remoting/host/cast_extension_session.h"
 #include "remoting/protocol/network_settings.h"
 
@@ skipping 13 matching lines @@
 CastExtension::~CastExtension() {
 }
 
 std::string CastExtension::capability() const {
   return kCapability;
 }
 
 scoped_ptr<HostExtensionSession> CastExtension::CreateExtensionSession(
     ClientSessionControl* client_session_control,
     protocol::ClientStub* client_stub) {
-  return CastExtensionSession::Create(network_task_runner_,
-                                      url_request_context_getter_,
-                                      network_settings_,
-                                      client_session_control,
-                                      client_stub).Pass();
+  return CastExtensionSession::Create(
+      network_task_runner_, url_request_context_getter_, network_settings_,
+      client_session_control, client_stub);
 }
 
 }  // namespace remoting