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manifest.json
{
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "browser_style": true,
    "default_icon": {
      "16": "icons/default.svg",
      "32": "icons/default.svg",
      "64": "icons/default.svg"
    },
    "default_title": "merge && sort"
  },
  "description": "Merge and sort all tabs",
  "icons": {
    "16": "icons/default.svg",
    "48": "icons/default.svg"
  },
  "manifest_version": 2,
  "name": "merge && sort",
  "permissions": [
    "activeTab",
    "tabs",
    "<all_urls>"
  ],
  "version": "0.2",
  "browser_specific_settings": {
    "gecko": {
      "id": "{1a0032bf-0ea6-4ba1-be3f-01cb27d1671e}"
    }
  }
}