Password visibility toggle

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Password visibility toggle",
  "version": "1.0",
  "description": "Allows user to reveal their own passwords on input fields via context menu.",
  "manifest_version": 2,
  "icons": {
    "128": "password_visibility_toggle.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "permissions": [
    "contextMenus"
  ],
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "contentscript.js"
      ],
      "run_at": "document_end",
      "all_frames": true
    }
  ]
}