Examine source code of Electrical circuit symbol

{
  "manifest_version": 2,
  "name": "Electrical circuit symbol",
  "version": "1.0",
  "description": "An electrical circuit symbol is a graphic representation of the components in an electrical circuit, used in: Electrical schematic diagrams,Technical documents, textbooks...",
  "icons": {
    "48": "icon.png"
  },
  "browser_action": {
    "default_icon": "icon.png",
    "default_popup": "popup.html",
    "default_title": "Click me!"
  },
  "permissions": [
    "activeTab"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{98cd1376-4702-4cd1-b0e6-452e19361528}"
    }
  }
}