Remove base/port.h includes that are not necessary anymore.

net/tools/balsa/balsa_headers.cc

 // Copyright 2013 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 "net/tools/balsa/balsa_headers.h"
 
 #include <stdio.h>
 #include <algorithm>
 #include <string>
 #include <utility>
 #include <vector>
 
 #include "base/containers/hash_tables.h"
 #include "base/logging.h"
-#include "base/port.h"
 #include "base/strings/string_piece.h"
 #include "base/strings/stringprintf.h"
 #include "net/tools/balsa/balsa_enums.h"
 #include "net/tools/balsa/buffer_interface.h"
 #include "net/tools/balsa/simple_buffer.h"
 #include "third_party/tcmalloc/chromium/src/base/googleinit.h"
 
 #if defined(COMPILER_MSVC)
 #include <string.h>
 #define snprintf _snprintf
@@ skipping 944 matching lines @@
 
 void BalsaHeaders::SetResponseReasonPhrase(const base::StringPiece& reason) {
   // Note: There is no difference between request_version() and
   // response_reason_phrase(). Thus, a function to set one is equivalent to a
   // function to set the other. We maintain two functions for this as it is
   // much more descriptive, and makes code more understandable.
   SetRequestVersion(reason);
 }
 
 }  // namespace net