Reland 'Convert //net and //chromecast to std::unordered_*'

net/base/network_interfaces_linux.cc

Index: net/base/network_interfaces_linux.cc
diff --git a/net/base/network_interfaces_linux.cc b/net/base/network_interfaces_linux.cc
index 6b8a2b65e8fc92c714e3fc3a517aeec0db9064f3..293e32e45709219275bf14c834d37af1f8539a6a 100644
--- a/net/base/network_interfaces_linux.cc
+++ b/net/base/network_interfaces_linux.cc
@@ -114,7 +114,7 @@ std::string GetInterfaceSSID(const std::string& ifname) {
 bool GetNetworkListImpl(
     NetworkInterfaceList* networks,
     int policy,
-    const base::hash_set<int>& online_links,
+    const std::unordered_set<int>& online_links,
     const internal::AddressTrackerLinux::AddressMap& address_map,
     GetInterfaceNameFunction get_interface_name) {
   std::map<int, std::string> ifnames;