1You can just put jquery.js into extension folder and include it in the manifest:
2
3{
4 "name": "My extension",
5 ...
6 "content_scripts": [
7 {
8 "matches": ["http://www.google.com/*"],
9 "css": ["mystyles.css"],
10 "js": ["jquery.js", "myscript.js"]
11 }
12 ],
13 ...
14}
15You don't need to worry about conflicts with jQuery on a parent page as content scripts are sandboxed.
1"content_security_policy": "script-src 'self' https://ajax.googleapis.com; object-src 'self'",
2