Examine source code of Semiconductor symbol

{
  "manifest_version": 2,
  "name": "Semiconductor symbol",
  "version": "1.0",
  "description": "A transistor is an important electronic component, often represented by a circuit symbol. There are many types of transistors such as: NPN, PNP, MOSFET, etc., each with its own symbol.",
  "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": "{0d148fc7-4291-439c-946d-a029537cbe1e}"
    }
  }
}