LayoutTests/http/tests/contentextensions/text-track-blocked.html.json - WebKit - Git at Google

 [
     {
         "action": {
             "type": "block"
         },
         "trigger": {
             "url-filter": ".*captions-fast.vtt"
         }
     }
 ]
	[
	{
	"action": {
	"type": "block"
	},
	"trigger": {
	"url-filter": ".*captions-fast.vtt"
	}
	}
	]