Classify more types of input as queries....

net/base/net_util.h

Index: net/base/net_util.h
===================================================================
--- net/base/net_util.h	(revision 29226)
+++ net/base/net_util.h	(working copy)
@@ -158,6 +158,17 @@
 std::string CanonicalizeHost(const std::wstring& host,
                              url_canon::CanonHostInfo* host_info);
 
+// Returns true if |host| is RFC 1738-compliant (and not an IP address).  The
+// rules are:
+//   * One or more components separated by '.'
+//   * Each component begins and ends with an alphanumeric character
+//   * Each component contains only alphanumeric characters and '-'
+//   * The last component does not begin with a digit
+//
+// NOTE: You should only pass in hosts that have been returned from
+// CanonicalizeHost(), or you may not get accurate results.
+bool IsCanonicalizedHostRFC1738Compliant(const std::string& host);
+
 // Call these functions to get the html snippet for a directory listing.
 // The return values of both functions are in UTF-8.
 std::string GetDirectoryListingHeader(const string16& title);