Simple Audio Fader

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "Simple Audio Fader",
  "description": "A chrome extension that simply fades audio when another tab starts playing it.",
  "content_security_policy": "script-src 'self' https://www.google-analytics.com; object-src 'self'",
  "browser_action": {
    "default_popup": "options.html"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "content.compiled.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "background": {
    "page": "background.html",
    "persistent": false
  },
  "permissions": [
    "tabs"
  ],
  "version": "1.0.0",
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon128.png"
  }
}