Play Along

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Play Along",
  "short_name": "Play Along",
  "version": "1.3",
  "manifest_version": 2,
  "description": "Extension for playing guitar along to YouTube videos",
  "permissions": [
    "activeTab",
    "declarativeContent",
    "storage",
    "tabs",
    "webNavigation",
    "https://www.ultimate-guitar.com/"
  ],
  "background": {
    "scripts": [
      "js/background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.youtube.com/*"
      ],
      "all_frames": true,
      "runs_at": "document_idle",
      "js": [
        "js/process-video.js"
      ],
      "css": [
        "css/styles.css"
      ]
    }
  ],
  "content_security_policy": "script-src 'self' https://ssl.google-analytics.com; object-src 'self'",
  "page_action": {
    "default_popup": "popup.html",
    "default_title": "Play along",
    "default_icon": {
      "16": "images/icon-16.png",
      "32": "images/icon-32.png",
      "48": "images/icon-48.png",
      "128": "images/icon-128.png"
    }
  },
  "icons": {
    "16": "images/icon-16.png",
    "32": "images/icon-32.png",
    "48": "images/icon-48.png",
    "128": "images/icon-128.png"
  }
}