- Electron version: 1.2.0
- Operating system: Mac OS X - 10.11.5

I upgraded from 1.1.1 to 1.2.0. 1.2.0 breaks on the following `index.html`:

``` html
<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="utf-8">
        <script>
            console.log(process.env.NODE_ENV)
        </script>
    </head>
    <body>
        <div id="app-container"></div>
    </body>
</html>
```

Error:

```
Uncaught ReferenceError: process is not defined
```

atom/renderer/atom_renderer_client.cc
v8::Handle<v8::Context> context, content::RenderFrame* render_frame) {
  node::Environment* env = node::Environment::GetCurrent(context);
  if (env)
    mate::EmitEvent(env->isolate(), env->process_object(), "exit");
}
bool AtomRendererClient::ShouldFork(blink::WebLocalFrame* frame,
                                    const GURL& url,
                                    const std::string& http_method,
                                    bool is_initial_navigation,
                                    bool is_server_redirect,
                                    bool* send_referrer) {
  
  
  
  
  *send_referrer = true;
  return http_method == "GET";
}
content::BrowserPluginDelegate* AtomRendererClient::CreateBrowserPluginDelegate(