manifest.json

{
    "manifest_version": 2,
    "name": "食べ物の画像にモザイクをかける拡張",
    "version": "1.0",
    "content_scripts": [{
        "matches": [ "<all_urls>" ],
        "js": [ "jquery.min.js", "custom.js" ],
        "run_at": "document_start"
    }]
}