Examine source code of Console Shortcut

{
  "manifest_version": 2,
  "name": "Console Shortcut",
  "version": "1.0",
  "description": "Open Developer Console with one click (simulated).",
  "permissions": [
    "activeTab"
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": "icon.png",
    "default_title": "Open Console"
  },
  "icons": {
    "48": "icon.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{be6b4dc9-f549-4ac7-82fb-1ad893a2f7c4}"
    }
  }
}