Examine source code of Page Speed Analyzer

{
  "manifest_version": 2,
  "name": "Page Speed Analyzer",
  "version": "1.0",
  "description": "Measures the loading speed of any webpage and provides optimization tips.",
  "permissions": [
    "activeTab",
    "webRequest",
    "webRequestBlocking"
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_title": "Analyze Page Speed"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{972ceff4-abe9-4cff-92bb-73f2959517ba}"
    }
  }
}