Implement SDCH Dictionary domain matching as per RFC 2965

net/base/sdch_dictionary.h

Index: net/base/sdch_dictionary.h
diff --git a/net/base/sdch_dictionary.h b/net/base/sdch_dictionary.h
index fcbecdc48629ebcc741b3f0f12210a2ceaf4c408..b0b25877bcc299855e919c7a48c7c9055161f5e3 100644
--- a/net/base/sdch_dictionary.h
+++ b/net/base/sdch_dictionary.h
@@ -66,6 +66,9 @@ class NET_EXPORT_PRIVATE SdchDictionary {
   // target that arrived with a reference to this dictionary.
   SdchProblemCode CanUse(const GURL& referring_url) const;
 
+  // Compare domains to see if they "match" for dictionary use.
+  static bool DomainMatch(const GURL& url, const std::string& restriction);
+
   // Compare paths to see if they "match" for dictionary use.
   static bool PathMatch(const std::string& path,
                         const std::string& restriction);