The Chrome Link Counter

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "The Chrome Link Counter",
  "version": "1.1",
  "description": "Counts all links for a specific URL With this simple extension you are able to count all the links on a specific url",
  "icons": {
    "48": "icons/icon_default.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "all_frames": true,
      "js": [
        "content/main.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "background/main.js"
    ]
  },
  "browser_action": {
    "default_popup": "",
    "chrome_style": false,
    "default_icon": {
      "16": "icons/icon_default.png"
    }
  },
  "web_accessible_resources": [
    "icons/icon.png",
    "icons/check.png"
  ],
  "permissions": [
    "storage",
    "webRequest",
    "tabs"
  ]
}