Examine source code of Browser Speed Booster

{
  "manifest_version": 2,
  "name": "Browser Speed Booster",
  "version": "1.0",
  "description": "Boosts your browser's speed by cleaning up unused data and optimizing tabs.",
  "permissions": [
    "tabs",
    "storage",
    "activeTab"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "browser_action": {
    "default_popup": "popup.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{2eb6918e-faaa-4a3f-9f33-ace3146ff422}"
    }
  }
}