Where's the Cheese?

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "Where's the Cheese?",
  "description": "Tracking your mouse's movement",
  "version": "1.0.5",
  "browser_action": {
    "default_icon": "images/icon128.png",
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "scripts/jquery-1.11.2.js",
        "scripts/page_script.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "scripts/background.js"
    ]
  },
  "permissions": [
    "activeTab",
    "https://ajax.googleapis.com/",
    "notifications"
  ],
  "web_accessible_resources": [
    "/images/icon128.png"
  ],
  "icons": {
    "16": "/images/icon16.png",
    "48": "/images/icon48.png",
    "128": "/images/icon128.png"
  }
}