Revert of Wire 'blink::Platform::isHostnameReservedIPAddress()' to 'net::IsReservedIPAddress()'.

net/base/net_util.cc

Index: net/base/net_util.cc
diff --git a/net/base/net_util.cc b/net/base/net_util.cc
index 1b65c6b10e4bbf0edf2082ef14970e4747a603f4..941dca9ab53ba1a4cb3214712a4ae7e16cf7ee62 100644
--- a/net/base/net_util.cc
+++ b/net/base/net_util.cc
@@ -799,28 +799,6 @@
   return AF_UNSPEC;
 }
 
-bool ParseURLHostnameToNumber(const std::string& hostname,
-                              IPAddressNumber* ip_number) {
-  // |hostname| is an already canoncalized hostname, conforming to RFC 3986.
-  // For an IP address, this is defined in Section 3.2.2 of RFC 3986, with
-  // the canonical form for IPv6 addresses defined in Section 4 of RFC 5952.
-  url::Component host_comp(0, hostname.size());
-
-  // If it has a bracket, try parsing it as an IPv6 address.
-  if (hostname[0] == '[') {
-    ip_number->resize(16);  // 128 bits.
-    return url::IPv6AddressToNumber(
-        hostname.data(), host_comp, &(*ip_number)[0]);
-  }
-
-  // Otherwise, try IPv4.
-  ip_number->resize(4);  // 32 bits.
-  int num_components;
-  url::CanonHostInfo::Family family = url::IPv4AddressToNumber(
-      hostname.data(), host_comp, &(*ip_number)[0], &num_components);
-  return family == url::CanonHostInfo::IPV4;
-}
-
 bool ParseIPLiteralToNumber(const std::string& ip_literal,
                             IPAddressNumber* ip_number) {
   // |ip_literal| could be either a IPv4 or an IPv6 literal. If it contains