Keyboard Control for Firefox

manifest.json

{
  "manifest_version": 2,
  "minimum_chrome_version": "43",
  "name": "Keyboard Control for Firefox",
  "description": "Keyboard shortcuts for navigation and control. Vim like bindings.",
  "background": {
    "scripts": [
      "js/background.js"
    ]
  },
  "content_scripts": [
    {
      "all_frames": true,
      "match_about_blank": true,
      "run_at": "document_start",
      "js": [
        "js/contentscript.js",
        "dialog_polyfill/dialog-polyfill.js"
      ],
      "css": [
        "dialog_polyfill/dialog-polyfill.css"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "icons": {
    "16": "img/icon16.png",
    "32": "img/icon32.png",
    "48": "img/icon48.png",
    "128": "img/icon128.png"
  },
  "web_accessible_resources": [
    "iframe.html",
    "img/picon.png"
  ],
  "applications": {
    "gecko": {
      "id": "[email protected]",
      "strict_min_version": "57.0"
    }
  },
  "options_ui": {
    "open_in_tab": true,
    "page": "options.html"
  },
  "permissions": [
    "storage",
    "unlimitedStorage",
    "tabs",
    "bookmarks",
    "history",
    "clipboardWrite",
    "clipboardRead",
    "downloads",
    "sessions",
    "management",
    "<all_urls>"
  ],
  "content_security_policy": "script-src 'self'; connect-src *; img-src *; frame-src *; object-src 'self'",
  "version": "9.6resigned1"
}