Stop the Music

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "Stop the Music",
  "description": "Pauses all playing YouTube videos.",
  "version": "1.0",
  "author": "Roxton Labs",
  "browser_action": {
    "default_icon": "stopIcon.png",
    "default_title": "Click to pause/resume background YouTube Videos.\nRight-click to set keyboard shortcut."
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "activeTab",
    "contextMenus",
    "tabs",
    "http://*/*",
    "https://*/*"
  ],
  "commands": {
    "stop-the-music": {
      "suggested_key": {
        "default": "Ctrl+Shift+1"
      },
      "description": "Pauses/resumes background YouTube videos.",
      "global": true
    }
  }
}