Support GLBIC example.

native_client_sdk/src/examples/hello_world_glibc/helper_functions.h

+// 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.
+
+#ifndef EXAMPLES_HELLO_WORLD_HELPER_FUNCTIONS_H_
+#define EXAMPLES_HELLO_WORLD_HELPER_FUNCTIONS_H_
+
+/// @file
+/// These functions are stand-ins for your complicated computations which you
+/// want to run in native code.  We do two very simple things:  return 42, and
+/// reverse a string.  But you can imagine putting more complicated things here
+/// which might be difficult or slow to achieve in JavaScript, such as
+/// cryptography, artificial intelligence, signal processing, physics modeling,
+/// etc.  See hello_world.cc for the code which is required for loading a NaCl
+/// application and exposing methods to JavaScript.
+
+#include <ppapi/c/pp_stdint.h>
+#include <string>
+
+namespace hello_world {
+
+/// This is the module's function that does the work to compute the value 42.
+int32_t FortyTwo();
+
+/// This function is passed a string and returns a copy of the string with the
+/// characters in reverse order.
+/// @param[in] text The string to reverse.
+/// @return A copy of @a text with the characters in reverse order.
+std::string ReverseText(const std::string& text);
+
+}  // namespace hello_world
+
+#endif  // EXAMPLES_HELLO_WORLD_HELPER_FUNCTIONS_H_
+