Submit any form with Ctrl+Enter

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "Submit any form with Ctrl+Enter",
  "version": "1.0.1",
  "description": "Just press Ctrl+Enter to submit a form.",
  "permissions": [
    "<all_urls>"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "/content_scripts/submit_form_with_ctrl_enter.js"
      ],
      "run_at": "document_start",
      "match_about_blank": true,
      "all_frames": true
    }
  ]
}