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
targety: 'targetY',
  textanchor: 'textAnchor',
  'text-anchor': 'textAnchor',
  textdecoration: 'textDecoration',
  'text-decoration': 'textDecoration',
  textlength: 'textLength',
  textrendering: 'textRendering',
  'text-rendering': 'textRendering',
  to: 'to',
  transform: 'transform',
  typeof: 'typeof',
  u1: 'u1',
  u2: 'u2',
  underlineposition: 'underlinePosition',
  'underline-position': 'underlinePosition',
  underlinethickness: 'underlineThickness',
  'underline-thickness': 'underlineThickness',
  unicode: 'unicode',
  unicodebidi: 'unicodeBidi',
  'unicode-bidi': 'unicodeBidi',
  unicoderange: 'unicodeRange',
  'unicode-range': 'unicodeRange',
  unitsperem: 'unitsPerEm',
  'units-per-em': 'unitsPerEm',
  unselectable: 'unselectable',
  valphabetic: 'vAlphabetic',
  'v-alphabetic': 'vAlphabetic',
  values: 'values',
  vectoreffect: 'vectorEffect',
  'vector-effect': 'vectorEffect',