Examine source code of Sunwin - Force Coppy

{
  "manifest_version": 2,
  "name": "ForceCopy",
  "version": "1.1",
  "author": "MrOnlineCoder",
  "description": "Allows you to copy content from sites with copy-protection.",
  "icons": {
    "48": "icons/icon.png"
  },
  "browser_action": {
    "browser_style": true,
    "default_icon": {
      "16": "icons/icon.png",
      "32": "icons/icon.png"
    },
    "default_title": "ForceCopy"
  },
  "default_locale": "en",
  "background": {
    "scripts": [
      "forcecopy.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "contentscript.js"
      ]
    }
  ],
  "permissions": [
    "notifications"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{1e9b0166-5375-4632-b05f-63c6d91e6bde}"
    }
  }
}