OmniTab

manifest.json

{
  "update_url": "http://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "OmniTab",
  "version": "1.2.1",
  "description": "Quickly switch tabs using the omnibar",
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "omnibox": {
    "keyword": "o"
  },
  "background": {
    "page": "background.html"
  },
  "permissions": [
    "tabs"
  ]
}