Improve OriginAccessEntry support for IP addresses.

Source/platform/weborigin/OriginAccessEntry.h

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 27 matching lines @@
 
 class SecurityOrigin;
 
 class PLATFORM_EXPORT OriginAccessEntry {
 public:
     enum SubdomainSetting {
         AllowSubdomains,
         DisallowSubdomains
     };
 
+    // Note that 'TreatIPAddressAsDomain' MUST only be used for testing, and does not work for IPv6 addresses. It does the
+    // bare minimum necessary to support 'document.domain' layout test expectations, and should not be relied upon for either
+    // robustness or sanity.
+    //
+    // TODO(mkwst): Remove this enum once we rewrite the 'document.domain' layout tests to use '*.example.test' rather than
+    // raw IP addresses.
     enum IPAddressSetting {
         TreatIPAddressAsDomain,
         TreatIPAddressAsIPAddress
     };
 
     enum MatchResult {
         MatchesOrigin,
         MatchesOriginButIsPublicSuffix,
         DoesNotMatchOrigin
     };
 
     // If host is empty string and SubdomainSetting is AllowSubdomains, the entry will match all domains in the specified protocol.
+    // IPv6 addresses must include brackets (e.g. '[2001:db8:85a3::8a2e:370:7334]', not '2001:db8:85a3::8a2e:370:7334').
     OriginAccessEntry(const String& protocol, const String& host, SubdomainSetting, IPAddressSetting);
     MatchResult matchesOrigin(const SecurityOrigin&) const;
 
     const String& protocol() const { return m_protocol; }
     const String& host() const { return m_host; }
     SubdomainSetting subdomainSettings() const { return m_subdomainSettings; }
     IPAddressSetting ipAddressSettings() const { return m_ipAddressSettings; }
+    bool hostIsIPAddress() const { return m_hostIsIPAddress; }
 
 private:
     String m_protocol;
     String m_host;
     SubdomainSetting m_subdomainSettings;
     IPAddressSetting m_ipAddressSettings;
     bool m_hostIsIPAddress;
     bool m_hostIsPublicSuffix;
 };
 
 PLATFORM_EXPORT inline bool operator==(const OriginAccessEntry& a, const OriginAccessEntry& b)
 {
     return equalIgnoringCase(a.protocol(), b.protocol())
         && equalIgnoringCase(a.host(), b.host())
         && a.subdomainSettings() == b.subdomainSettings()
         && a.ipAddressSettings() == b.ipAddressSettings();
 }
 
 PLATFORM_EXPORT inline bool operator!=(const OriginAccessEntry& a, const OriginAccessEntry& b)
 {
     return !(a == b);
 }
 
 } // namespace blink
 
 #endif // OriginAccessEntry_h