DnsClient refactoring + features (timeout, suffix search, server rotation).

net/base/dns_util.h

Index: net/base/dns_util.h
diff --git a/net/base/dns_util.h b/net/base/dns_util.h
index 03b18710167bea588d32e182fd1bbdc30b2f5131..260e9141b326f8440e291cd42b95dc26e489784c 100644
--- a/net/base/dns_util.h
+++ b/net/base/dns_util.h
@@ -22,7 +22,8 @@ namespace net {
 NET_EXPORT_PRIVATE bool DNSDomainFromDot(const base::StringPiece& dotted,
                                          std::string* out);
 
-// DNSDomainToString coverts a domain in DNS format to a dotted string.
+// DNSDomainToString converts a domain in DNS format to a dotted string.
+// Excludes the dot at the end.
 NET_EXPORT_PRIVATE std::string DNSDomainToString(
     const base::StringPiece& domain);