Examine source code of GestureVid: Media Control

{
  "manifest_version": 2,
  "name": "GestureVid Pro: Ultimate Media Control",
  "version": "6.5",
  "description": "Ultra-robust video gestures with forced override. Works on ALL sites with multi-touch support.",
  "permissions": [
    "storage",
    "activeTab",
    "<all_urls>"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_start",
      "all_frames": true
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "gv-ultimate-x4dd5@android.addon",
      "strict_min_version": "113.0"
    }
  },
  "browser_action": {
    "default_icon": {
      "48": "icon-48x48.png"
    },
    "default_title": "GestureVid Pro Settings",
    "default_popup": "options.html",
    "browser_style": false
  },
  "options_ui": {
    "page": "settings.html",
    "open_in_tab": true
  },
  "icons": {
    "48": "icon-48x48.png"
  },
  "web_accessible_resources": [
    "icon-48x48.png",
    "icon-96x96.png"
  ]
}