Examine source code of EScope-2020

{
  "name": "EScope-2020",
  "description": "Election Political Ad research - used for the pre-defined, recruited and consenting participants",
  "version": "1.5.4",
  "manifest_version": 2,
  "icons": {
    "48": "icons/icon_48.png",
    "128": "icons/icon_128.png"
  },
  "browser_action": {
    "default_title": "escope-2020-extension",
    "default_popup": "popup/popup.html"
  },
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "storage",
    "management",
    "history",
    "http://*/*",
    "https://*/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{408be937-a9fd-47b8-8105-572e8d862c1d}"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "exclude_matches": [
        "*://s3.amazonaws.com/static.microtargeting/*",
        "*://chrome-add-on.dev/*"
      ],
      "js": [
        "content_script.js"
      ],
      "run_at": "document_idle",
      "all_frames": true
    }
  ]
}