Add NaCl smoke test to browser_tests.

chrome/test/data/nacl/simple.cc

+// 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.
+
+#include "ppapi/cpp/instance.h"
+#include "ppapi/cpp/module.h"
+
+class SimpleInstance : public pp::Instance {
+ public:
+  explicit SimpleInstance(PP_Instance instance) : pp::Instance(instance) {
+  }
+};
+
+class SimpleModule : public pp::Module {
+ public:
+  virtual pp::Instance* CreateInstance(PP_Instance instance) {
+    return new SimpleInstance(instance);
+  }
+};
+
+namespace pp {
+
+Module* CreateModule() {
+  return new SimpleModule();
+}
+
+}  // namespace pp