Examine source code of HashPass

{
  "manifest_version": 2,
  "name": "HashPass",
  "version": "1.2",
  "description": "Makes simple password secure!",
  "background": {
    "scripts": [
      "content-script.js"
    ]
  },
  "permissions": [
    "<all_urls>",
    "activeTab",
    "menus",
    "tabs",
    "unlimitedStorage",
    "contextMenus"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content-script.js"
      ]
    }
  ],
  "browser_action": {
    "default_icon": "icon.png",
    "default_title": "SecurePass",
    "default_popup": "view.html"
  }
}