static async isFairPlaySupported() {
    const config = {
      initDataTypes: ['cenc', 'sinf', 'skd'],
      videoCapabilities: [
        {
          contentType: 'video/mp4; codecs="avc1.42E01E"',
        },
      ],
    };
    try {
      await navigator.requestMediaKeySystemAccess('com.apple.fps', [config]);
      return true;
    } catch (err) {
      return false;
    }
  }
Check if FairPlay is supported.

@return {!Promise<boolean>}
@export