- Electron version: 0.37.2
- Operating system: OS X (El Capitan 10.11.3)

If you use `debugger` it will not pause the execution of the program. If I downgrade to electron version `0.36.x`, then it works.

Same happens when you set up breakpoints in the Developer Tools.

![Debugger issue](http://i.imgur.com/jps3VVH.gif)

atom/browser/api/atom_api_web_contents.cc
const content::WebContents* web_contents) {
  auto context = web_contents->GetBrowserContext();
  auto site_instance = web_contents->GetSiteInstance();
  if (!context || !site_instance)
    return nullptr;
  auto storage_partition =
      content::BrowserContext::GetStoragePartition(context, site_instance);
  if (!storage_partition)
    return nullptr;
  return storage_partition->GetServiceWorkerContext();
}
}  
WebContents::WebContents(content::WebContents* web_contents)
    : content::WebContentsObserver(web_contents),
      type_(REMOTE),
      request_id_(0),
      background_throttling_(true) {
  AttachAsUserData(web_contents);
  web_contents->SetUserAgentOverride(GetBrowserContext()->GetUserAgent());
}
WebContents::WebContents(v8::Isolate* isolate,