Use a direct include of strings headers in remoting/.

remoting/protocol/message_decoder_unittest.cc

 // Copyright (c) 2011 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 <string>
 
 #include "base/memory/scoped_ptr.h"
 #include "base/stl_util.h"
-#include "base/string_number_conversions.h"
+#include "base/strings/string_number_conversions.h"
 #include "remoting/proto/event.pb.h"
 #include "remoting/proto/internal.pb.h"
 #include "remoting/protocol/message_decoder.h"
 #include "remoting/protocol/util.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace remoting {
 namespace protocol {
 
 static const unsigned int kTestKey = 142;
@@ skipping 96 matching lines @@
   SimulateReadSequence(kReads, arraysize(kReads));
 }
 
 TEST(MessageDecoderTest, EmptyReads) {
   const int kReads[] = {4, 0, 50, 0};
   SimulateReadSequence(kReads, arraysize(kReads));
 }
 
 }  // namespace protocol
 }  // namespace remoting