Examine source code of Canvas LMS Helper

{
  "manifest_version": 2,
  "name": "Canvas LMS Helper",
  "version": "1.0",
  "description": "Tiện ích hỗ trợ Canvas LMS: đánh dấu bài đã đọc, giao diện tối, lọc bài tập,...",
  "permissions": [
    "storage",
    "tabs",
    "https://*.instructure.com/*"
  ],
  "icons": {
    "48": "icons/icon48.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "https://*.instructure.com/*"
      ],
      "js": [
        "content.js"
      ],
      "css": [
        "style.css"
      ]
    }
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": "icons/icon48.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{0fbc0d6f-fa3f-46bf-ad96-20f3ae77c499}"
    }
  }
}