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

net/base/network_interfaces_unittest.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/base/network_interfaces.h"
 
+#include <string>
+
 #include <ostream>
-#include <string>
-#include <unordered_set>
 
 // TODO(eroman): Remove unneeeded headers.
 #include "base/files/file_path.h"
 #include "base/format_macros.h"
 #include "base/scoped_native_library.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/sys_byteorder.h"
@@ skipping 202 matching lines @@
 
 char* GetInterfaceNameVM(int interface_index, char* ifname) {
   return CopyInterfaceName(ifname_vm, arraysize(ifname_vm), ifname);
 }
 
 TEST(NetworkInterfacesTest, GetNetworkListTrimming) {
   IPAddress ipv6_local_address(kIPv6LocalAddr);
   IPAddress ipv6_address(kIPv6Addr);
 
   NetworkInterfaceList results;
-  std::unordered_set<int> online_links;
+  ::base::hash_set<int> online_links;
   internal::AddressTrackerLinux::AddressMap address_map;
 
   // Interface 1 is offline.
   struct ifaddrmsg msg = {
       AF_INET6,
       1,               /* prefix length */
       IFA_F_TEMPORARY, /* address flags */
       0,               /* link scope */
       1                /* link index */
   };
@@ skipping 499 matching lines @@
   // We can't check the result of GetHostName() directly, since the result
   // will differ across machines. Our goal here is to simply exercise the
   // code path, and check that things "look about right".
   std::string hostname = GetHostName();
   EXPECT_FALSE(hostname.empty());
 }
 
 }  // namespace
 
 }  // namespace net