manifest.json

{
  "manifest_version": 2,

  "name": "Help us help you",
  "description": "This extension shows a Google Image search result for the current page",
  "version": "1.0",
  "background": {
      "persistent": true,
      "scripts": [ "popup.js" ]
   },
  "browser_action": {
    "default_icon": "/logos/icon.png",
    "default_popup": "popup.html"
  },
  "permissions": [
    "contextMenus",
    "tabs",
    "activeTab",
    "https://ajax.googleapis.com/",
    "http://*/*",
    "https://*/*"
  ],
  "update_url": "https://clients2.google.com/service/update2/crx",
  "content_scripts": [
    {
    "include_globs":    [ "http://www.dictionary.com/browse/*?id=helpushelpyou",
                          "http://www.urbandictionary.com/define.php*?id=helpushelpyou*",
                          "https://en.wikipedia.org/wiki/*?id=helpushelpyou",
                          "https://translate.google.com/?id=helpushelpyou&ion=1&espv=2&bav=on.2,or.r_cp.&bvm=bv.126130881,d.cGc&biw=1855&bih=951&dpr=1&um=1&ie=UTF-8&hl=en&client=tw-ob#en/zh-CN/*",
                          "https://www.google.com/search?id=helpushelpyou&noj=1&site=imghp&tbm=isch&source=hp&biw=1855&bih=990&q=*",
                          "https://www.amazon.com/s/ref=nb_sb_noss_2?id=helpushelpyou&url=search-alias%3Daps&field-keywords=*",
                          "http://losangeles.craigslist.org/search/sss?id=helpushelpyou&query=*"],
    "matches": [
        "http://*/*",
        "https://*/*"
        ],
    "js": ["content.js"],
    "run_at": "document_end"
    }]
}