Smart Shopping - Finds the best prices

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "author": "Gabor Meszaros",
  "name": "Smart Shopping - Finds the best prices",
  "description": "Save items from your favourite webshops into your Smart Shopping list to track prices.",
  "version": "0.9.4",
  "manifest_version": 2,
  "background": {
    "page": "index.html",
    "persistent": true
  },
  "browser_action": {
    "default_icon": {
      "16": "assets/images/app_logo_16.png",
      "48": "assets/images/app_logo_48.png",
      "128": "assets/images/app_logo_128.png"
    },
    "default_popup": "popup.html"
  },
  "icons": {
    "16": "assets/images/app_logo_16.png",
    "48": "assets/images/app_logo_48.png",
    "128": "assets/images/app_logo_128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "contentscript.js"
      ],
      "all_frames": false,
      "run_at": "document_end"
    }
  ],
  "permissions": [
    "activeTab",
    "tabs",
    "idle",
    "notifications",
    "contextMenus",
    "cookies",
    "unlimitedStorage",
    "alarms",
    "webRequest",
    "webNavigation",
    "webRequestBlocking",
    "history"
  ],
  "web_accessible_resources": [
    "/assets/images/app_text.svg"
  ],
  "content_security_policy": "script-src 'self' 'unsafe-eval'; object-src 'self';"
}