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

}
  },
  findDOMNode: findDOMNode,
  unstable_createPortal(
    children: ReactNodeList,
    container: DOMContainer,
    key: ?string = null,
  ) {
    
    return ReactPortal.createPortal(children, container, null, key);
  },
  unstable_batchedUpdates: ReactGenericBatching.batchedUpdates,
  unstable_deferredUpdates: DOMRenderer.deferredUpdates,
  flushSync: DOMRenderer.flushSync,
  __SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED: {
    
    EventPluginHub: require('EventPluginHub'),
    
    EventPluginRegistry: require('EventPluginRegistry'),
    EventPropagators: require('EventPropagators'),
    ReactControlledComponent,
    ReactDOMComponentTree,
    ReactDOMEventListener: require('ReactDOMEventListener'),
  },
};
const foundDevTools = injectInternals({
  findFiberByHostInstance: ReactDOMComponentTree.getClosestInstanceFromNode,
  findHostInstanceByFiber: DOMRenderer.findHostInstance,
  
  bundleType: __DEV__ ? 1 : 0,