Examine source code of Find and Replace Text

{
  "manifest_version": 2,
  "name": "Find and Replace Text",
  "version": "1.0",
  "description": "Find and replace text on the current webpage.",
  "permissions": [
    "activeTab"
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "48": "icons/icon.png"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{156a9eb8-7e27-45c5-b2b0-6122b92533d1}"
    }
  }
}