Bug Report: `disablePictureInPicture` for html5 video elements are not supported

Eg:

```
    <video
    src="https://www.w3schools.com/tags/movie.mp4"
    disablePictureInPicture
    loop
    controls
    controlsList="nodownload"  
    ></video>
```

**What is the current behavior?**

Should remove the 3 dots (more button) on videos on Chrome:

![image](https://user-images.githubusercontent.com/2953026/55615012-0231b100-5797-11e9-9020-3552a1b8401e.png)

**What is the expected behavior?**

Instead, the attribute is not taken into consideration so the more menu stays:

![image](https://user-images.githubusercontent.com/2953026/55615032-107fcd00-5797-11e9-8d3a-4c25c8ed6e99.png)

Example:

https://jsfiddle.net/r1w4x7m0/2/

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

All / Latest, Chrome Browsers, All OSes.

Pull request for this issue has also been submitted: #15334
refy: 'refY',
  renderingintent: 'renderingIntent',
  'rendering-intent': 'renderingIntent',
  repeatcount: 'repeatCount',
  repeatdur: 'repeatDur',
  requiredextensions: 'requiredExtensions',
  requiredfeatures: 'requiredFeatures',
  resource: 'resource',
  restart: 'restart',
  result: 'result',
  results: 'results',
  rotate: 'rotate',
  rx: 'rx',
  ry: 'ry',
  scale: 'scale',
  security: 'security',
  seed: 'seed',
  shaperendering: 'shapeRendering',
  'shape-rendering': 'shapeRendering',
  slope: 'slope',
  spacing: 'spacing',
  specularconstant: 'specularConstant',
  specularexponent: 'specularExponent',
  speed: 'speed',
  spreadmethod: 'spreadMethod',
  startoffset: 'startOffset',
  stddeviation: 'stdDeviation',
  stemh: 'stemh',
  stemv: 'stemv',
  stitchtiles: 'stitchTiles',