Migrate net/proxy/* to net::IPAddress.

net/proxy/proxy_resolver_v8.cc

Index: net/proxy/proxy_resolver_v8.cc
diff --git a/net/proxy/proxy_resolver_v8.cc b/net/proxy/proxy_resolver_v8.cc
index 80ae06b7e55540b16ad7e8b0204012ef22610e7f..a0c9717baca4cbe6aa69752ab1161d0b6296f809 100644
--- a/net/proxy/proxy_resolver_v8.cc
+++ b/net/proxy/proxy_resolver_v8.cc
@@ -21,7 +21,7 @@
 #include "gin/array_buffer.h"
 #include "gin/public/isolate_holder.h"
 #include "gin/v8_initializer.h"
-#include "net/base/ip_address_number.h"
+#include "net/base/ip_address.h"
 #include "net/base/net_errors.h"
 #include "net/proxy/proxy_info.h"
 #include "net/proxy/proxy_resolver_script.h"
@@ -244,26 +244,29 @@ bool GetHostnameArgument(const v8::FunctionCallbackInfo<v8::Value>& args,
   return success;
 }
 
-// Wrapper for passing around IP address strings and IPAddressNumber objects.
-struct IPAddress {
-  IPAddress(const std::string& ip_string, const IPAddressNumber& ip_number)
-      : string_value(ip_string),
-        ip_address_number(ip_number) {
-  }
+// Wrapper around an IP address that stores the original string as well as a
+// corresponding parsed IPAddress.
+
+// This struct is used as a helper for sorting IP address strings - the IP
+// literal is parsed just once and used as the sorting key, while also
+// preserving the original IP literal string.
+struct IPAddressSortingEntry {
+  IPAddressSortingEntry(const std::string& ip_string,
+                        const IPAddress& ip_address)
+      : string_value(ip_string), ip_address(ip_address) {}
 
   // Used for sorting IP addresses in ascending order in SortIpAddressList().
-  // IP6 addresses are placed ahead of IPv4 addresses.
-  bool operator<(const IPAddress& rhs) const {
-    const IPAddressNumber& ip1 = this->ip_address_number;
-    const IPAddressNumber& ip2 = rhs.ip_address_number;
+  // IPv6 addresses are placed ahead of IPv4 addresses.
+  bool operator<(const IPAddressSortingEntry& rhs) const {
+    const IPAddress& ip1 = this->ip_address;
+    const IPAddress& ip2 = rhs.ip_address;
     if (ip1.size() != ip2.size())
       return ip1.size() > ip2.size();  // IPv6 before IPv4.
-    DCHECK(ip1.size() == ip2.size());
-    return memcmp(&ip1[0], &ip2[0], ip1.size()) < 0;  // Ascending order.
+    return ip1 < ip2;                  // Ascending order.
   }
 
   std::string string_value;
-  IPAddressNumber ip_address_number;
+  IPAddress ip_address;
 };
 
 // Handler for "sortIpAddressList(IpAddressList)". |ip_address_list| is a
@@ -284,13 +287,13 @@ bool SortIpAddressList(const std::string& ip_address_list,
     return false;
 
   // Split-up IP addresses and store them in a vector.
-  std::vector<IPAddress> ip_vector;
-  IPAddressNumber ip_num;
+  std::vector<IPAddressSortingEntry> ip_vector;
+  IPAddress ip_address;
   base::StringTokenizer str_tok(cleaned_ip_address_list, ";");
   while (str_tok.GetNext()) {
-    if (!ParseIPLiteralToNumber(str_tok.token(), &ip_num))
+    if (!ip_address.AssignFromIPLiteral(str_tok.token()))
       return false;
-    ip_vector.push_back(IPAddress(str_tok.token(), ip_num));
+    ip_vector.push_back(IPAddressSortingEntry(str_tok.token(), ip_address));
   }
 
   if (ip_vector.empty())  // Can happen if we have something like
@@ -320,11 +323,11 @@ bool SortIpAddressList(const std::string& ip_address_list,
 // format, or if an address and prefix of different types are used (e.g. IPv6
 // address and IPv4 prefix).
 bool IsInNetEx(const std::string& ip_address, const std::string& ip_prefix) {
-  IPAddressNumber address;
-  if (!ParseIPLiteralToNumber(ip_address, &address))
+  IPAddress address;
+  if (!address.AssignFromIPLiteral(ip_address))
     return false;
 
-  IPAddressNumber prefix;
+  IPAddress prefix;
   size_t prefix_length_in_bits;
   if (!ParseCIDRBlock(ip_prefix, &prefix, &prefix_length_in_bits))
     return false;
@@ -333,10 +336,10 @@ bool IsInNetEx(const std::string& ip_address, const std::string& ip_prefix) {
   if (address.size() != prefix.size())
     return false;
 
-  DCHECK((address.size() == 4 && prefix.size() == 4) ||
-         (address.size() == 16 && prefix.size() == 16));
+  DCHECK((address.IsIPv4() && prefix.IsIPv4()) ||
+         (address.IsIPv6() && prefix.IsIPv6()));
 
-  return IPNumberMatchesPrefix(address, prefix, prefix_length_in_bits);
+  return IPAddressMatchesPrefix(address, prefix, prefix_length_in_bits);
 }
 
 // Consider only single component domains like 'foo' as plain host names.
@@ -346,8 +349,8 @@ bool IsPlainHostName(const std::string& hostname_utf8) {
 
   // IPv6 literals might not contain any periods, however are not considered
   // plain host names.
-  IPAddressNumber unused;
-  return !ParseIPLiteralToNumber(hostname_utf8, &unused);
+  IPAddress unused;
+  return !unused.AssignFromIPLiteral(hostname_utf8);
 }
 
 // All instances of ProxyResolverV8 share the same v8::Isolate. This isolate is