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

rootContainerInstance,
    );
  },
  commitMount(
    domElement: Instance,
    type: string,
    newProps: Props,
    internalInstanceHandle: Object,
  ): void {
    ((domElement: any):
      | HTMLButtonElement
      | HTMLInputElement
      | HTMLSelectElement
      | HTMLTextAreaElement).focus();
  },
  commitUpdate(
    domElement: Instance,
    updatePayload: Array<mixed>,
    type: string,
    oldProps: Props,
    newProps: Props,
    internalInstanceHandle: Object,
  ): void {
    
    
    updateFiberProps(domElement, newProps);
    
    updateProperties(domElement, updatePayload, type, oldProps, newProps);
  },
  shouldSetTextContent(type: string, props: Props): boolean {