Add "PRIVATE" to the enum names of some private Pepper networking APIs:

ppapi/shared_impl/private/net_address_private_impl.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ppapi/shared_impl/private/net_address_private_impl.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
 #include <winsock2.h>
 #include <ws2tcpip.h>
@@ skipping 115 matching lines @@
   return net_addr;
 }
 
 bool IsValid(const NetAddress* net_addr) {
   return net_addr && net_addr->is_valid;
 }
 
 PP_NetAddressFamily_Private GetFamily(const PP_NetAddress_Private* addr) {
   const NetAddress* net_addr = ToNetAddress(addr);
   if (!IsValid(net_addr))
-    return PP_NETADDRESSFAMILY_UNSPECIFIED;
+    return PP_NETADDRESSFAMILY_PRIVATE_UNSPECIFIED;
   return net_addr->is_ipv6 ?
-         PP_NETADDRESSFAMILY_IPV6 : PP_NETADDRESSFAMILY_IPV4;
+         PP_NETADDRESSFAMILY_PRIVATE_IPV6 : PP_NETADDRESSFAMILY_PRIVATE_IPV4;
 }
 
 uint16_t GetPort(const PP_NetAddress_Private* addr) {
   const NetAddress* net_addr = ToNetAddress(addr);
   if (!IsValid(net_addr))
     return 0;
   return net_addr->port;
 }
 
 PP_Bool GetAddress(const PP_NetAddress_Private* addr,
@@ skipping 428 matching lines @@
   ipv6_addr->port = ConvertToNetEndian16(net_addr->port);
 
   COMPILE_ASSERT(sizeof(ipv6_addr->addr) == kIPv6AddressSize,
                  mismatched_IPv6_address_size);
   memcpy(ipv6_addr->addr, net_addr->address, kIPv6AddressSize);
 
   return true;
 }
 
 }  // namespace ppapi