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

net/base/address_tracker_linux_unittest.cc

Index: net/base/address_tracker_linux_unittest.cc
diff --git a/net/base/address_tracker_linux_unittest.cc b/net/base/address_tracker_linux_unittest.cc
index 74ecafaf8c5f37d4e0fcd5f4a688622a31772b04..1b349e53dfaad93fdc9292e5b204c2404a616a4b 100644
--- a/net/base/address_tracker_linux_unittest.cc
+++ b/net/base/address_tracker_linux_unittest.cc
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include <unordered_set>
 #include <vector>
 
 #include "base/bind.h"
@@ -101,7 +100,7 @@
     return tracker_->GetAddressMap();
   }
 
-  const std::unordered_set<int> GetOnlineLinks() const {
+  const base::hash_set<int> GetOnlineLinks() const {
     return tracker_->GetOnlineLinks();
   }
 
@@ -113,7 +112,7 @@
     return tracker_->GetThreadsWaitingForConnectionTypeInitForTesting();
   }
 
-  std::unordered_set<std::string> ignored_interfaces_;
+  base::hash_set<std::string> ignored_interfaces_;
   scoped_ptr<AddressTrackerLinux> tracker_;
   AddressTrackerLinux::GetInterfaceNameFunction original_get_interface_name_;
 };