Examine source code of Lite Saver

{
  "manifest_version": 2,
  "incognito": "spanning",
  "name": "__MSG_extName__",
  "description": "__MSG_extDesc__",
  "author": "bit4in@gmail.com",
  "homepage_url": "https://erc2.github.io/",
  "version": "1.0",
  "default_locale": "en",
  "icons": {
    "256": "on256.png"
  },
  "browser_action": {
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "run_at": "document_start",
      "all_frames": true,
      "js": [
        "su.js"
      ]
    }
  ],
  "background": {
    "persistent": true,
    "scripts": [
      "a.js",
      "p2p.js",
      "bg.js"
    ]
  },
  "permissions": [
    "background",
    "idle",
    "management",
    "storage",
    "notifications",
    "webNavigation",
    "tabs",
    "activeTab",
    "webRequest",
    "webRequestBlocking",
    "proxy",
    "cookies",
    "<all_urls>"
  ]
}