Toggle Design Mode

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "Toggle Design Mode",
  "version": "0.0.1",
  "description": "Toggle document.designMode",
  "icons": {
    "16": "icons/edit-button.png",
    "48": "icons/edit-button.png",
    "128": "icons/edit-button.png"
  },
  "background": {
    "scripts": [
      "src/event.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "src/content.js"
      ]
    }
  ],
  "permissions": [
    "activeTab",
    "contextMenus"
  ]
}