Examine source code of Search Tabs

{
  "manifest_version": 2,
  "name": "Search Tabs",
  "version": "0.2.1",
  "icons": {
    "16": "assets/icons/favicon-16.png",
    "32": "assets/icons/favicon-32.png",
    "48": "assets/icons/favicon-48.png",
    "128": "assets/icons/favicon-128.png"
  },
  "description": "You can search all your tabs in current window.",
  "homepage_url": "https://github.com/quorafind/search-and-navigate-tabs",
  "short_name": "Search Tabs",
  "permissions": [
    "activeTab",
    "storage",
    "http://*/*",
    "https://*/*",
    "tabs",
    "sessions",
    "history",
    "bookmarks"
  ],
  "content_security_policy": "script-src 'self'; object-src 'self'",
  "author": "boninall",
  "browser_specific_settings": {
    "gecko": {
      "id": "{2a9833f4-990d-4f9e-923d-09bafe447352}"
    }
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "assets/icons/favicon-16.png",
      "32": "assets/icons/favicon-32.png",
      "48": "assets/icons/favicon-48.png",
      "128": "assets/icons/favicon-128.png"
    },
    "default_title": "Search Tabs",
    "browser_style": false
  },
  "commands": {
    "_execute_browser_action": {
      "suggested_key": {
        "default": "Ctrl+Shift+F",
        "mac": "Command+Shift+F"
      },
      "description": "Open tabs search"
    }
  }
}