Examine source code of Click Assistant

{
  "manifest_version": 2,
  "name": "Click Assistant",
  "version": "0.1.1",
  "description": "Automatically clicks buttons (e.g., login, submit).",
  "permissions": [
    "storage",
    "activeTab"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{a593e53e-67d5-4efe-950f-4bed0b6050ef}",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_title": "Click Assistant Settings",
    "default_icon": {
      "32": "icons/32x32.png",
      "64": "icons/64x64.png",
      "128": "icons/128x128.png"
    }
  },
  "icons": {
    "32": "icons/32x32.png",
    "64": "icons/64x64.png",
    "128": "icons/128x128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_end"
    }
  ]
}