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

remoting/client/plugin/pepper_network_manager.cc

Index: remoting/client/plugin/pepper_network_manager.cc
diff --git a/remoting/client/plugin/pepper_network_manager.cc b/remoting/client/plugin/pepper_network_manager.cc
index e03be2c99a54293854bf7e3284cdf29cc41ddaa7..afe79a00419098765a497a7ae976c88a63791b22 100644
--- a/remoting/client/plugin/pepper_network_manager.cc
+++ b/remoting/client/plugin/pepper_network_manager.cc
@@ -74,14 +74,14 @@ void PepperNetworkManager::OnNetworkList(const pp::NetworkListPrivate& list) {
     // TODO(sergeyu): Copy all addresses, not only the first one.
     talk_base::IPAddress address;
     switch (pp::NetAddressPrivate::GetFamily(addresses[0])) {
-      case PP_NETADDRESSFAMILY_IPV4: {
+      case PP_NETADDRESSFAMILY_PRIVATE_IPV4: {
         in_addr* address_ipv4 = reinterpret_cast<in_addr*>(address_bytes);
         address = talk_base::IPAddress(*address_ipv4);
         prefix_length = sizeof(in_addr) * 8;
         break;
       }
 
-      case PP_NETADDRESSFAMILY_IPV6: {
+      case PP_NETADDRESSFAMILY_PRIVATE_IPV6: {
         in6_addr* address_ipv6 = reinterpret_cast<in6_addr*>(address_bytes);
         address = talk_base::IPAddress(*address_ipv6);
         prefix_length = sizeof(in6_addr) * 8;