Examine source code of Find in Tabs

{
  "manifest_version": 2,
  "name": "Find in Tabs",
  "author": "igorlogius",
  "homepage_url": "https://github.com/igorlogius/find-in-tabs",
  "description": "Quickly find text in all your open and active tabs",
  "icons": {
    "128": "icon.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_area": "navbar",
    "default_popup": "popup.html"
  },
  "sidebar_action": {
    "default_icon": "icon.png",
    "open_at_install": false,
    "default_panel": "popup.html"
  },
  "permissions": [
    "menus",
    "storage",
    "find",
    "tabs"
  ],
  "content_scripts": [
    {
      "js": [
        "content.js"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "options_ui": {
    "page": "options.html"
  },
  "commands": {
    "_execute_browser_action": {
      "suggested_key": {
        "default": "Ctrl+Shift+F"
      }
    }
  },
  "version": "1.1.19",
  "browser_specific_settings": {
    "gecko": {
      "id": "{1ea9b794-9e71-4dfa-9308-a21fbc6644d9}"
    }
  }
}