Examine source code of MyEzyLogin

{
  "manifest_version": 2,
  "name": "Access Email",
  "description": "Access to your favorite email sites instantly from your new tab page!",
  "version": "2.6resigned1",
  "background": {
    "scripts": [
      "ezysearch.js",
      "ezysearch.format.js"
    ]
  },
  "icons": {
    "128": "easymailaccess-favicon.png"
  },
  "browser_action": {
    "default_icon": "easymailaccess-favicon.png"
  },
  "chrome_url_overrides": {
    "newtab": "homepage.html"
  },
  "applications": {
    "gecko": {
      "id": "{ef5ba0d2-1896-483f-867e-e24eb32a1545}",
      "strict_min_version": "55.0"
    }
  },
  "permissions": [
    "http://*/*",
    "file:///*",
    "https://*/*",
    "history",
    "cookies",
    "tabs",
    "webRequest",
    "webRequestBlocking",
    "storage",
    "geolocation",
    "topSites"
  ],
  "content_security_policy": "script-src 'self'; object-src 'self'"
}