Replacerator

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Replacerator",
  "version": "1.1.2",
  "manifest_version": 2,
  "description": "Define custom rules to replace text in your browser.",
  "options_page": "options.html",
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "content_security_policy": "script-src 'self' 'unsafe-eval'; object-src 'self'",
  "content_scripts": [
    {
      "js": [
        "lib/underscore.min.js",
        "util.js",
        "replace.js"
      ],
      "matches": [
        "http://*/*",
        "https://*/*",
        "file:///*"
      ]
    }
  ],
  "permissions": [
    "tabs",
    "*://*/*",
    "<all_urls>",
    "storage"
  ]
}