Port net/tools/balsa to non-Linux platforms.

net/tools/balsa/balsa_headers.h

 // 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.
 
 #ifndef NET_TOOLS_BALSA_BALSA_HEADERS_H_
 #define NET_TOOLS_BALSA_BALSA_HEADERS_H_
 
 #include <algorithm>
 #include <iosfwd>
 #include <iterator>
@@ skipping 920 matching lines @@
   // accessors to work, use the Set* functions above this one.
   // SetFirstLine is stuff useful, however, if all you care about is correct
   // serialization with the rest of the header object.
   void SetFirstLine(const base::StringPiece& line);
 
   // Simple accessors to some of the internal state
   bool transfer_encoding_is_chunked() const {
     return transfer_encoding_is_chunked_;
   }
 
-  static bool ResponseCodeImpliesNoBody(int code) {
+  static bool ResponseCodeImpliesNoBody(size_t code) {
     // From HTTP spec section 6.1.1 all 1xx responses must not have a body,
     // as well as 204 No Content and 304 Not Modified.
     return ((code >= 100) && (code <= 199)) || (code == 204) || (code == 304);
   }
 
   // Note: never check this for requests. Nothing bad will happen if you do,
   // but spec does not allow requests framed by connection close.
   // TODO(vitaliyl): refactor.
   bool is_framed_by_connection_close() const {
     // We declare that response is framed by connection close if it has no
@@ skipping 177 matching lines @@
   size_t end_of_firstline_idx_;
 
   bool transfer_encoding_is_chunked_;
 
   HeaderLines header_lines_;
 };
 
 }  // namespace net
 
 #endif  // NET_TOOLS_BALSA_BALSA_HEADERS_H_