Music Only for Youtube

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "author": "Raphaël Léger",
  "browser_action": {
    "default_icon": "icon-on.png"
  },
  "background": {
    "scripts": [
      "js/background.js"
    ]
  },
  "content_scripts": [
    {
      "js": [
        "js/script.js"
      ],
      "matches": [
        "http://www.youtube.com/*",
        "https://www.youtube.com/*"
      ]
    }
  ],
  "description": "Keep only the music of Youtube: hides all videos, all images, yeah!",
  "icons": {
    "16": "icon.png",
    "48": "icon.png",
    "128": "icon.png"
  },
  "manifest_version": 2,
  "name": "Music Only for Youtube",
  "permissions": [
    "activeTab"
  ],
  "version": "0.2",
  "web_accessible_resources": [
    "js/script.js"
  ]
}