Examine source code of Jira Auto Direction

{
  "name": "Jira Auto Direction",
  "version": "0.0.3",
  "description": "Using this extension will fix text align automaticaly",
  "permissions": [
    "activeTab",
    "storage"
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "images/logo_16.png",
      "32": "images/logo_32.png",
      "48": "images/logo_48.png",
      "128": "images/logo_128.png"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "all_frames": true,
      "js": [
        "content_script.js"
      ],
      "css": [
        "content_script.css"
      ]
    }
  ],
  "icons": {
    "16": "images/logo_16.png",
    "32": "images/logo_32.png",
    "48": "images/logo_48.png",
    "128": "images/logo_128.png"
  },
  "manifest_version": 2,
  "browser_specific_settings": {
    "gecko": {
      "id": "{c1807daf-575b-4430-a489-a52087d76f56}",
      "strict_min_version": "70.0"
    }
  }
}