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

net/websockets/websocket_basic_handshake_stream.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/websockets/websocket_basic_handshake_stream.h"
 
 #include <stddef.h>
 #include <algorithm>
 #include <iterator>
 #include <set>
 #include <string>
-#include <unordered_set>
 #include <utility>
 #include <vector>
 
 #include "base/base64.h"
 #include "base/bind.h"
 #include "base/compiler_specific.h"
+#include "base/containers/hash_tables.h"
 #include "base/logging.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/metrics/sparse_histogram.h"
 #include "base/stl_util.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_piece.h"
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/time/time.h"
 #include "crypto/random.h"
@@ skipping 151 matching lines @@
   return true;
 }
 
 bool ValidateSubProtocol(
     const HttpResponseHeaders* headers,
     const std::vector<std::string>& requested_sub_protocols,
     std::string* sub_protocol,
     std::string* failure_message) {
   size_t iter = 0;
   std::string value;
-  std::unordered_set<std::string> requested_set(requested_sub_protocols.begin(),
-                                                requested_sub_protocols.end());
+  base::hash_set<std::string> requested_set(requested_sub_protocols.begin(),
+                                            requested_sub_protocols.end());
   int count = 0;
   bool has_multiple_protocols = false;
   bool has_invalid_protocol = false;
 
   while (!has_invalid_protocol || !has_multiple_protocols) {
     std::string temp_value;
     if (!headers->EnumerateHeader(&iter, websockets::kSecWebSocketProtocol,
                                   &temp_value))
       break;
     value = temp_value;
@@ skipping 395 matching lines @@
   set_failure_message("Error during WebSocket handshake: " + failure_message);
   return ERR_INVALID_RESPONSE;
 }
 
 void WebSocketBasicHandshakeStream::set_failure_message(
     const std::string& failure_message) {
   *failure_message_ = failure_message;
 }
 
 }  // namespace net