Include <utility> in files that use std::move() in remoting/protocol.

remoting/protocol/content_description_unittest.cc

 // 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.
 
 #include "remoting/protocol/content_description.h"
 
 #include <string>
+#include <utility>
 
 #include "base/logging.h"
 #include "remoting/protocol/authenticator.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/webrtc/libjingle/xmllite/xmlelement.h"
 
 namespace remoting {
 namespace protocol {
 
@@ skipping 78 matching lines @@
   scoped_ptr<ContentDescription> parsed(
       ContentDescription::ParseXml(xml.get(), false));
   ASSERT_TRUE(parsed.get());
   EXPECT_EQ(1U, parsed->config()->audio_configs().size());
   EXPECT_TRUE(parsed->config()->audio_configs().front() == ChannelConfig());
 }
 
 }  // namespace protocol
 }  // namespace remoting