Higher or Lower

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "Higher or Lower",
  "version": "2.0",
  "description": "Play HigherOrLowerGame without losing !",
  "content_scripts": [
    {
      "matches": [
        "http://www.higherlowergame.com/",
        "https://www.higherlowergame.com/",
        "http://www.higherlowergame.com/options",
        "https://www.higherlowergame.com/options"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "permissions": [
    "storage",
    "alarms",
    "unlimitedStorage",
    "activeTab",
    "tabs"
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_title": "Win every Higher Lower game"
  }
}