Replace the existing SpdyHeaderBlock typedef with a class.

net/spdy/spdy_framer.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 "net/spdy/spdy_framer.h"
 
 #include <string.h>
 
 #include <algorithm>
 #include <iterator>
@@ skipping 1312 matching lines @@
 // manner that resists the length of the compressed data from compromising
 // cookie data.
 void SpdyFramer::WriteHeaderBlockToZ(const SpdyHeaderBlock* headers,
                                      z_stream* z) const {
   unsigned length_length = 4;
   if (protocol_version() < 3)
     length_length = 2;
 
   WriteLengthZ(headers->size(), length_length, kZStandardData, z);
 
-  std::map<std::string, std::string>::const_iterator it;
+  SpdyHeaderBlock::const_iterator it;
   for (it = headers->begin(); it != headers->end(); ++it) {
     WriteLengthZ(it->first.size(), length_length, kZStandardData, z);
     WriteZ(it->first, kZStandardData, z);
 
     if (it->first == "cookie") {
       // We require the cookie values (save for the last) to end with a
       // semicolon and (save for the first) to start with a space. This is
       // typically the format that we are given them in but we reserialize them
       // to be sure.
 
@@ skipping 1899 matching lines @@
 #else
   WriteHeaderBlockToZ(&frame.header_block(), compressor);
 #endif  // defined(USE_SYSTEM_ZLIB)
 
   int compressed_size = compressed_max_size - compressor->avail_out;
   builder->Seek(compressed_size);
   builder->RewriteLength(*this);
 }
 
 }  // namespace net