Revert of Convert //net and //chromecast to std::unordered_*

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 <unordered_set>
 #include <utility>
 #include <vector>
 
+#include "base/containers/hash_tables.h"
 #include "base/logging.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
 #define strncasecmp _strnicmp
 #else
 #include <strings.h>
 #endif
 
 namespace {
 
 const char kContentLength[] = "Content-Length";
 const char kTransferEncoding[] = "Transfer-Encoding";
 const char kSpaceChar = ' ';
 
-std::unordered_set<base::StringPiece,
-                   net::StringPieceCaseHash,
-                   net::StringPieceCaseEqual>
-    g_multivalued_headers;
+#if defined(COMPILER_MSVC)
+base::hash_set<base::StringPiece,
+               net::StringPieceCaseCompare> g_multivalued_headers;
+#else
+base::hash_set<base::StringPiece,
+               net::StringPieceCaseHash,
+               net::StringPieceCaseEqual> g_multivalued_headers;
+#endif
 
 void InitMultivaluedHeaders() {
   g_multivalued_headers.insert("accept");
   g_multivalued_headers.insert("accept-charset");
   g_multivalued_headers.insert("accept-encoding");
   g_multivalued_headers.insert("accept-language");
   g_multivalued_headers.insert("accept-ranges");
   g_multivalued_headers.insert("allow");
   g_multivalued_headers.insert("cache-control");
   g_multivalued_headers.insert("connection");
@@ skipping 915 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