Add simple NaCl gamepad example

native_client_sdk/src/examples/gamepad/gamepad_module.cc

+// Copyright (c) 2012 The Native Client 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/cpp/module.h>
+
+#include "gamepad.h"
+
+namespace gamepad {
+// The Module class.  The browser calls the CreateInstance() method to create
+// an instance of your NaCl module on the web page.  The browser creates a new
+// instance for each <embed> tag with type="application/x-nacl".
+class GamepadModule : public pp::Module {
+ public:
+  GamepadModule() : pp::Module() {}
+  virtual ~GamepadModule() {}
+
+  // Create and return a GamepadInstance object.
+  virtual pp::Instance* CreateInstance(PP_Instance instance) {
+    return new Gamepad(instance);
+  }
+};
+}  // namespace gamepad
+
+// Factory function called by the browser when the module is first loaded.
+// The browser keeps a singleton of this module.  It calls the
+// CreateInstance() method on the object you return to make instances.  There
+// is one instance per <embed> tag on the page.  This is the main binding
+// point for your NaCl module with the browser.
+namespace pp {
+Module* CreateModule() {
+  return new gamepad::GamepadModule();
+}
+}  // namespace pp