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

ppapi/api/private/ppb_net_address_private.idl

 /* 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.
  */
 
 /**
  * This file defines the <code>PPB_NetAddress_Private</code> interface.
  */
 
 label Chrome {
     M13 = 0.0,
     M17 = 0.1,
     M19_0 = 1.0,
     M19_1 = 1.1
 };
 
 [assert_size(4)]
 enum PP_NetAddressFamily_Private {
   /**
    * The address family is unspecified.
    */
-  PP_NETADDRESSFAMILY_UNSPECIFIED = 0,
+  PP_NETADDRESSFAMILY_PRIVATE_UNSPECIFIED = 0,
   /**
    * The Internet Protocol version 4 (IPv4) address family.
    */
-  PP_NETADDRESSFAMILY_IPV4 = 1,
+  PP_NETADDRESSFAMILY_PRIVATE_IPV4 = 1,
   /**
    * The Internet Protocol version 6 (IPv6) address family.
    */
-  PP_NETADDRESSFAMILY_IPV6 = 2
+  PP_NETADDRESSFAMILY_PRIVATE_IPV6 = 2
 };
 
 /**
  * This is an opaque type holding a network address. Plugins must
  * never access members of this struct directly.
  */
 [assert_size(132)]
 struct PP_NetAddress_Private {
   uint32_t size;
   char[128] data;
@@ skipping 79 matching lines @@
   /**
    * Creates NetAddress with the specified IPv6 address, scope_id and
    * port number.
    */
   [version=1.1]
   void CreateFromIPv6Address([in] uint8_t[16] ip,
                              [in] uint32_t scope_id,
                              [in] uint16_t port,
                              [out] PP_NetAddress_Private addr_out);
 };