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
kerning: 'kerning',
  keypoints: 'keyPoints',
  keysplines: 'keySplines',
  keytimes: 'keyTimes',
  lengthadjust: 'lengthAdjust',
  letterspacing: 'letterSpacing',
  'letter-spacing': 'letterSpacing',
  lightingcolor: 'lightingColor',
  'lighting-color': 'lightingColor',
  limitingconeangle: 'limitingConeAngle',
  local: 'local',
  markerend: 'markerEnd',
  'marker-end': 'markerEnd',
  markerheight: 'markerHeight',
  markermid: 'markerMid',
  'marker-mid': 'markerMid',
  markerstart: 'markerStart',
  'marker-start': 'markerStart',
  markerunits: 'markerUnits',
  markerwidth: 'markerWidth',
  mask: 'mask',
  maskcontentunits: 'maskContentUnits',
  maskunits: 'maskUnits',
  mathematical: 'mathematical',
  mode: 'mode',
  numoctaves: 'numOctaves',
  offset: 'offset',
  opacity: 'opacity',
  operator: 'operator',
  order: 'order',