Examine source code of Sweeper

{
  "manifest_version": 2,
  "name": "Sweeper",
  "version": "0.1.2resigned1",
  "description": "Clean blurs and erase annoying HTML popups or other elements.",
  "icons": {
    "16": "res/sweeper.svg",
    "32": "res/x32.png",
    "64": "res/x64.png"
  },
  "permissions": [
    "activeTab",
    "contextMenus"
  ],
  "background": {
    "scripts": [
      "src/background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "src/sweeper.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{ae3bac3c-2682-4010-8d96-5121f26f8d7b}"
    }
  }
}