Examine source code of Network Activity Logger

{
  "manifest_version": 2,
  "name": "Network Activity Logger",
  "version": "1.0",
  "description": "Captures response bodies from web requests",
  "author": "Subhash Dasyam",
  "homepage_url": "https://subhashdasyam.com",
  "developer": {
    "name": "Subhash Dasyam",
    "url": "https://subhashdasyam.com"
  },
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "storage",
    "<all_urls>",
    "tabs"
  ],
  "background": {
    "scripts": [
      "browser-polyfill.js",
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "browser-polyfill.js",
        "content.js"
      ],
      "run_at": "document_start",
      "all_frames": true
    }
  ],
  "browser_action": {
    "default_icon": {
      "16": "icons/icon16.svg",
      "48": "icons/icon48.svg",
      "128": "icons/icon128.svg"
    },
    "default_title": "Network Activity Logger",
    "default_popup": "popup.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{56421755-ef1a-4c33-8da1-725df160a7c1}"
    }
  }
}