SoundMail

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "SoundMail",
  "version": "0.2",
  "description": "Add sounds to your gmail!",
  "content_scripts": [
    {
      "matches": [
        "https://mail.google.com/*"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "web_accessible_resources": [
    "jquery-1.11.3.min.js",
    "gmail.js",
    "main.js"
  ],
  "manifest_version": 2
}