Examine source code of SelectiveOpportunity

{
  "manifest_version": 2,
  "name": "SelectiveOpportunity",
  "version": "1.0",
  "description": "Block specific companies from appearing in LinkedIn job search results",
  "permissions": [
    "storage",
    "contextMenus",
    "notifications",
    "https://www.linkedin.com/jobs/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.linkedin.com/jobs/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_end"
    }
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_title": "SelectiveOpportunity",
    "default_icon": "icons/terminal48.png"
  },
  "icons": {
    "48": "icons/terminal48.png",
    "96": "icons/terminal96.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "selectiveopportunity@example.com",
      "data_collection_permissions": {
        "required": [
          "websiteActivity"
        ]
      }
    }
  }
}