Video speed buttons

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "__MSG_appName__",
  "description": "__MSG_appDesc__",
  "version": "1.28",
  "offline_enabled": true,
  "icons": {
    "16": "icon-16.png",
    "48": "icon-48.png",
    "128": "icon-128.png"
  },
  "browser_action": {
    "default_popup": "popup.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "content_scripts": [
    {
      "all_frames": true,
      "css": [
        "inject_style.css"
      ],
      "js": [
        "inject.js"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "default_locale": "en",
  "content_security_policy": "script-src 'self' https://www.google-analytics.com; object-src 'self'",
  "permissions": [
    "storage",
    "<all_urls>"
  ]
}