Examine source code of BCLEAR - History Cleaner

{
  "manifest_version": 2,
  "name": "BCLEAR - History Cleaner",
  "version": "1.1.0",
  "description": "A simple tool for clean browser history.",
  "icons": {
    "48": "icons/borderify-32.png"
  },
  "permissions": [
    "history",
    "tabs",
    "storage"
  ],
  "background": {
    "scripts": [
      "borderify.js"
    ]
  },
  "options_ui": {
    "page": "options/options.html",
    "open_in_tab": false
  },
  "browser_action": {
    "default_icon": {
      "16": "icons/borderify-16.png",
      "32": "icons/borderify-32.png"
    }
  }
}