YouTube Play/Pause

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "YouTube Play/Pause",
  "version": "0.4.0",
  "description": "On Clicking the icon of this extension, it will play/pause the video playing on YouTube.com",
  "permissions": [
    "tabs",
    "http://*/*",
    "https://*/*"
  ],
  "browser_action": {
    "default_title": "YouTube Play/Pause with AdSkipper",
    "default_icon": "icon-2.png",
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "http://www.youtube.com/*",
        "https://www.youtube.com/*"
      ],
      "js": [
        "ad_skipper.js"
      ],
      "run_at": "document_end"
    }
  ]
}