YouTube TV Volume control

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "YouTube TV Volume control",
  "version": "1.0.2.4",
  "description": "Runs on Youtube.com/TV and adds volume control to the player controls panel",
  "manifest_version": 2,
  "background": {
    "persistent": true,
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.youtube.com/*"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "web_accessible_resources": [],
  "browser_action": {
    "default_icon": "img/icon-19-grey.png",
    "default_title": "YouTubeTVPanel",
    "icons": {
      "19": "img/icon-19-grey.png",
      "48": "img/icon-48.png",
      "128": "img/icon-128.png"
    }
  },
  "icons": {
    "48": "img/icon-48.png",
    "128": "img/icon-128.png"
  },
  "permissions": [
    "tabs",
    "webRequest",
    "webRequestBlocking",
    "*://*.youtube.com/*",
    "*://youtube.com/tv"
  ]
}