YouTube Speed Slider

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "YouTube Speed Slider",
  "version": "0.0.2",
  "manifest_version": 2,
  "description": "YouTube Speed Slider provides variable playback speed, screen darkening and more!",
  "icons": {
    "16": "icons/16x16.png",
    "19": "icons/19x19.png",
    "38": "icons/38x38.png",
    "48": "icons/48x48.png",
    "128": "icons/128x128.png"
  },
  "browser_action": {
    "default_icon": {
      "19": "icons/19x19.png",
      "38": "icons/38x38.png"
    },
    "default_title": "YouTube Speed Slider",
    "default_popup": "browseraction/popup.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "content_scripts": [
    {
      "matches": [
        "http://youtube.com/*",
        "https://youtube.com/*",
        "http://www.youtube.com/*",
        "https://www.youtube.com/*"
      ],
      "js": [
        "content.js"
      ]
    }
  ]
}