Examine source code of TextRec

{
  "manifest_version": 2,
  "name": "TextRec",
  "version": "1.1",
  "permissions": [
    "<all_urls>",
    "tabs",
    "storage",
    "contextMenus",
    "webNavigation"
  ],
  "description": "Saves text of pages you navigate to",
  "icons": {
    "48": "icon.svg",
    "96": "icon.svg"
  },
  "browser_action": {
    "browser_style": true,
    "default_title": "TextRec",
    "default_popup": "popup.html",
    "default_icon": {
      "48": "icon.svg"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "applications": {
    "gecko": {
      "id": "textrec@textrec.com"
    }
  }
}