Move some net::IPAddressNumber implementations to net::IPAddress.

net/base/ip_address.h

Index: net/base/ip_address.h
diff --git a/net/base/ip_address.h b/net/base/ip_address.h
index 2f9d7aba90c3db2232de7592e99469ba4bc42485..50bfb2be63b5e924737f5bdb7dbff39930b6201b 100644
--- a/net/base/ip_address.h
+++ b/net/base/ip_address.h
@@ -75,7 +75,7 @@ class NET_EXPORT IPAddress {
   // only checks the address length.
   bool IsValid() const;
 
-  // Returns true if an IP address hostname is in a range reserved by the IANA.
+  // Returns true if the IP is in a range reserved by the IANA.
   // Works with both IPv4 and IPv6 addresses, and only compares against a given
   // protocols's reserved ranges.
   bool IsReserved() const;