Add CreateFromIPv[46]Address() in PPB_NetAddress_Private.

ppapi/cpp/private/net_address_private.h

Index: ppapi/cpp/private/net_address_private.h
diff --git a/ppapi/cpp/private/net_address_private.h b/ppapi/cpp/private/net_address_private.h
index c242175a1de57974a45dcbd3240b8ccba37171ff..14c3ac31ba44981c276b9b3f331a66d1ea79897b 100644
--- a/ppapi/cpp/private/net_address_private.h
+++ b/ppapi/cpp/private/net_address_private.h
@@ -31,7 +31,15 @@ class NetAddressPrivate {
       const PP_NetAddress_Private& addr);
   static uint16_t GetPort(const PP_NetAddress_Private& addr);
   static bool GetAddress(const PP_NetAddress_Private& addr,
-                         void* address, uint16_t address_size);
+                         void* address,
+                         uint16_t address_size);
+  static void CreateFromIPv4Address(const uint8_t ip[4],
+                                    uint16_t port,
+                                    struct PP_NetAddress_Private* addr_out);
+  static void CreateFromIPv6Address(const uint8_t ip[16],
+                                    uint32_t scope_id,
+                                    uint16_t port,
+                                    struct PP_NetAddress_Private* addr_out);
 };
 
 }  // namespace pp