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

ppapi/tests/test_tcp_socket_private.cc

Index: ppapi/tests/test_tcp_socket_private.cc
diff --git a/ppapi/tests/test_tcp_socket_private.cc b/ppapi/tests/test_tcp_socket_private.cc
index b6f158f426e5d8fda06084625631fd37b76322be..ba1c8f1ebddac632d16699951dcae63f10cbab0f 100644
--- a/ppapi/tests/test_tcp_socket_private.cc
+++ b/ppapi/tests/test_tcp_socket_private.cc
@@ -155,7 +155,8 @@ std::string TestTCPSocketPrivate::TestSetOption() {
   TestCompletionCallback cb(instance_->pp_instance(), callback_type());
 
   cb.WaitForResult(
-      socket.SetOption(PP_TCPSOCKETOPTION_NO_DELAY, true, cb.GetCallback()));
+      socket.SetOption(PP_TCPSOCKETOPTION_PRIVATE_NO_DELAY, true,
+                       cb.GetCallback()));
   CHECK_CALLBACK_BEHAVIOR(cb);
   ASSERT_EQ(PP_ERROR_FAILED, cb.result());
 
@@ -164,12 +165,14 @@ std::string TestTCPSocketPrivate::TestSetOption() {
   ASSERT_EQ(PP_OK, cb.result());
 
   cb.WaitForResult(
-      socket.SetOption(PP_TCPSOCKETOPTION_NO_DELAY, true, cb.GetCallback()));
+      socket.SetOption(PP_TCPSOCKETOPTION_PRIVATE_NO_DELAY, true,
+                       cb.GetCallback()));
   CHECK_CALLBACK_BEHAVIOR(cb);
   ASSERT_EQ(PP_OK, cb.result());
 
   cb.WaitForResult(
-      socket.SetOption(PP_TCPSOCKETOPTION_INVALID, true, cb.GetCallback()));
+      socket.SetOption(PP_TCPSOCKETOPTION_PRIVATE_INVALID, true,
+                       cb.GetCallback()));
   CHECK_CALLBACK_BEHAVIOR(cb);
   ASSERT_EQ(PP_ERROR_BADARGUMENT, cb.result());