Change media elements to use aspect-ratio rather than compute height themselves (#24686)

app/javascript/mastodon/components/picture_in_picture_placeholder.jsx

@@ -3,62 +3,22 @@ import PropTypes from 'prop-types';
 import Icon from 'mastodon/components/icon';
 import { removePictureInPicture } from 'mastodon/actions/picture_in_picture';
 import { connect } from 'react-redux';
-import { debounce } from 'lodash';
 import { FormattedMessage } from 'react-intl';
 
 class PictureInPicturePlaceholder extends React.PureComponent {
 
   static propTypes = {
-    width: PropTypes.number,
     dispatch: PropTypes.func.isRequired,
   };
 
-  state = {
-    width: this.props.width,
-    height: this.props.width && (this.props.width / (16/9)),
-  };
-
   handleClick = () => {
     const { dispatch } = this.props;
     dispatch(removePictureInPicture());
   };
 
-  setRef = c => {
-    this.node = c;
-
-    if (this.node) {
-      this._setDimensions();
-    }
-  };
-
-  _setDimensions () {
-    const width  = this.node.offsetWidth;
-    const height = width / (16/9);
-
-    this.setState({ width, height });
-  }
-
-  componentDidMount () {
-    window.addEventListener('resize', this.handleResize, { passive: true });
-  }
-
-  componentWillUnmount () {
-    window.removeEventListener('resize', this.handleResize);
-  }
-
-  handleResize = debounce(() => {
-    if (this.node) {
-      this._setDimensions();
-    }
-  }, 250, {
-    trailing: true,
-  });
-
   render () {
-    const { height } = this.state;
-
     return (
-      <div ref={this.setRef} className='picture-in-picture-placeholder' style={{ height }} role='button' tabIndex={0} onClick={this.handleClick}>
+      <div className='picture-in-picture-placeholder' role='button' tabIndex={0} onClick={this.handleClick}>
         <Icon id='window-restore' />
         <FormattedMessage id='picture_in_picture.restore' defaultMessage='Put it back' />
       </div>