**Do you want to request a *feature* or report a *bug*?**
*Feature*

**What is the current behavior?**
In Firefox the `dialog` element is not implemented. We use a polyfill to be able to support it. Everything works well. But React warns that the `dialog` element is unrecognized, and this on each page load, which is quite useless (for this specific case).
I would like the possibility to disable the  warning but only for some elements. So the utility of this warning remains when the developer mistype the component name.

**What is the expected behavior?**
Once we specified which tag are "accepted/normal" React will not warn on specified unrecognized tags.

**Which versions of React, and which browser / OS are affected by this issue? Did this work in previous versions of React?**
React 16
Firefox 57

In previous versions there was no warning.

Is this clear enough? Do you need any other information?
Cheers
},
  
  diffProperties(
    domElement: Element,
    tag: string,
    lastRawProps: Object,
    nextRawProps: Object,
    rootContainerElement: Element | Document,
  ): null | Array<mixed> {
    if (__DEV__) {
      validatePropertiesInDevelopment(tag, nextRawProps);
    }
    var updatePayload: null | Array<any> = null;
    var lastProps: Object;
    var nextProps: Object;
    switch (tag) {
      case 'input':
        lastProps = ReactDOMFiberInput.getHostProps(domElement, lastRawProps);
        nextProps = ReactDOMFiberInput.getHostProps(domElement, nextRawProps);
        updatePayload = [];
        break;
      case 'option':
        lastProps = ReactDOMFiberOption.getHostProps(domElement, lastRawProps);
        nextProps = ReactDOMFiberOption.getHostProps(domElement, nextRawProps);
        updatePayload = [];
        break;
      case 'select':
        lastProps = ReactDOMFiberSelect.getHostProps(domElement, lastRawProps);
        nextProps = ReactDOMFiberSelect.getHostProps(domElement, nextRawProps);
        updatePayload = [];