This is a bug report.

**Expected Behavior**
React should not suggest me to download the DevTools extension in a `chrome-extension://` page, because the extension has no permission to inject the devtool.

**Actual Behavior**
`Download the React DevTools and use an HTTP server (instead of a file: URL) for a better development experience: https://fb.me/react-devtools`

**Reproducing**

1. Create a Chrome extension with an `option` or `popup` page that uses React
2. Load the extension to Chrome and open up that page.
3. Observe console.

**Version**
Google Chrome 56.0.2924.3
React 15.4.0

next &&
      next.nodeType !== ELEMENT_NODE &&
      next.nodeType !== TEXT_NODE
    ) {
      next = next.nextSibling;
    }
    return (next: any);
  },
  hydrateInstance(
    instance: Instance,
    type: string,
    props: Props,
    rootContainerInstance: Container,
    internalInstanceHandle: Object,
  ): null | Array<mixed> {
    precacheFiberNode(internalInstanceHandle, instance);
    
    
    updateFiberProps(instance, props);
    return diffHydratedProperties(instance, type, props, rootContainerInstance);
  },
  hydrateTextInstance(
    textInstance: TextInstance,
    text: string,
    internalInstanceHandle: Object,
  ): boolean {
    precacheFiberNode(internalInstanceHandle, textInstance);
    return diffHydratedText(textInstance, text);
  },
  didNotHydrateInstance(