Chrome playback speed controller

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "Chrome playback speed controller",
  "description": "Controls the playback speed of your youtube or udemy video",
  "version": "1.2.1",
  "author": "Jean Sidharta Rocha Guzman",
  "content_scripts": [
    {
      "matches": [
        "*://www.youtube.com/*"
      ],
      "js": [
        "injectedYoutube.js"
      ]
    },
    {
      "matches": [
        "*://www.udemy.com/*"
      ],
      "js": [
        "injectedUdemy.js"
      ]
    }
  ],
  "background": {
    "persistent": false,
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_icon": {
      "16": "images/logo16.png",
      "24": "images/logo24.png",
      "32": "images/logo32.png",
      "128": "images/logo128.png"
    },
    "default_title": "Youtube playback speed",
    "default_popup": "popup/popup.html"
  },
  "icons": {
    "16": "images/logo16.png",
    "24": "images/logo24.png",
    "32": "images/logo32.png",
    "128": "images/logo128.png"
  },
  "permissions": [
    "activeTab",
    "tabs"
  ]
}