Syncs - synchronized web presentations

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "Syncs - synchronized web presentations",
  "description": "Navigate through multiple browser-based presentations at the same time",
  "version": "1.1",
  "options_page": "config.html",
  "icons": {
    "16": "icons/SyncOn16.png",
    "48": "icons/SyncOn48.png",
    "128": "icons/SyncOn128.png"
  },
  "permissions": [
    "storage"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "common.js",
        "syncs.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "common.js",
      "background.js"
    ]
  },
  "browser_action": {
    "default_icon": {
      "16": "icons/SyncOff16.png",
      "19": "icons/SyncOff19.png",
      "24": "icons/SyncOff24.png",
      "32": "icons/SyncOff32.png",
      "48": "icons/SyncOff48.png",
      "128": "icons/SyncOff128.png"
    }
  }
}